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                                    TTR, INC.

                                       AND

                       FIRST METROPOLITAN SECURITIES, INC.

                                   ___________

                                  UNDERWRITER'S
                                WARRANT AGREEMENT

                        DATED AS OF ______________, 1996


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     UNDERWRITER'S  WARRANT AGREEMENT dated as of ____________,  1996 among TTR,
Inc., a New York corporation (the "Company") and First Metropolitan  Securities,
Inc., a Delaware corporation  (hereinafter referred to variously as the "Holder"
or the "Underwriter").

                              W I T N E S S E T H :

     WHEREAS,  the  Company  proposes  to issue to the  Underwriter  warrants to
purchase up to an aggregate of 127,500  shares of common stock,  par value $.001
per share, of the Company  ("Common Stock") and 60,000  Redeemable  Common Stock
Purchase  Warrant  (the  "Warrants"  or  "Redeemable  Warrants"),  each  Warrant
exercisable for one share of Common Stock at $7.20,  collectively referred to as
the "Underwriter's Warrants"; and

     WHEREAS, the Underwriter has agreed pursuant to the underwriting  agreement
(the  "Underwriting  Agreement")  dated  as  of  the  date  hereof  between  the
Underwriter and the Company and certain selling  securityholders,  to underwrite
the  Company's  proposed  public  offering of  1,275,000  shares of Common Stock
(1,200,000   shares  by  the  Company  and  75,000  shares  by  certain  selling
securityholders) and 600,000 Redeemable Warrants,  at a public offering price of
between  $5.00  and  $6.00  per  share  and  $.25,   respectively  (the  "Public
Offering"); and

     WHEREAS, the Underwriter's Warrants to be issued pursuant to this Agreement
will be issued on the Closing Date (as such term is defined in the  Underwriting
Agreement) by the Company to the Underwriter in  consideration  for, and as part
of the compensation in connection with the Public Offering;







     NOW,  THEREFORE,  in  consideration  of the  premises,  the  payment by the
Underwriter  to the  Company  of an  aggregate  of  ten  dollars  ($10.00),  the
agreements  herein  set forth and other  good and  valuable  consideration,  the
receipt and  sufficiency  of which are hereby  acknowledged,  the parties hereto
agree as follows:

     1. Grant.  The Holder is hereby granted the right to purchase,  at any time
from ___________, 1997 until 5:30 P.M., New York time, on _______________, 2002,
up to an  aggregate  127,500  shares of Common  Stock and 60,000  Warrants at an
initial  exercise  price (subject to adjustment as provided in Section 8 hereof)
of $_.__ (120% of the initial  public  offering  price) and $.30,  respectively,
subject  to the  terms and  conditions  of this  Agreement.  Except as set forth
herein,   the  Common  Stock  and  Warrants   issuable   upon  exercise  of  the
Underwriter's  Warrants  are in all  respects  identical to the shares of Common
Stock and Warrants being  purchased by the  Underwriter for resale to the public
pursuant to the terms and provisions of the Underwriting Agreement.

     2.  Warrant   Certificates.   The  warrant   certificates   (the   "Warrant
Certificates") delivered and to be delivered pursuant to this Agreement shall be
in the form set forth in Exhibit A, attached hereto and made a part hereof, with
such appropriate insertions,  omissions,  substitutions, and other variations as
required or permitted by this Agreement.

     3.  Exercise of Warrant.  The  Warrants  initially  are  exercisable  at an
aggregate initial exercise price (subject to adjustment as

                                        2







provided  in  Section 8  hereof)  as set forth in  Section 6 hereof  payable  by
certified or official  bank check in New York Clearing  House funds,  subject to
adjustment  as provided in Section 8 hereof.  Upon  surrender  at the  Company's
principal  offices in New York  (presently  located at 16/8 Hatam Sofer  Street,
Immanuel,  Israel,  44845),  of a Warrant  Certificate  with the annexed Form of
Election to Purchase duly executed,  together with payment of the Purchase Price
(as  hereinafter  defined) for the shares of Common Stock and/or  Warrants,  the
registered  holder of a Warrant  Certificate  ("Holder" or  "Holders")  shall be
entitled to receive a certificate or certificates for the shares of Common Stock
and Warrants so purchased. The purchase rights represented by each Underwriter's
Warrant  Certificate  are  exercisable at the option of the Holder  thereof,  in
whole or in part (but not as to fractional  shares of the Common Stock).  In the
case of the purchase of less than all the shares and Warrants  purchasable under
any Warrant  Certificate,  the Company shall cancel the Warrant Certificate upon
the surrender thereof and shall execute and deliver a new Warrant Certificate of
like tenor for the balance of the securities purchasable thereunder.

     4.  Issuance  of  Certificates.  Upon  the  exercise  of the  Underwriter's
Warrants,  the  issuance of  certificates  for the Common  Stock and Warrants or
other securities,  properties or rights underlying such Underwriter's  Warrants,
shall be made  forthwith  (and in any  event  within  three  (3)  business  days
thereafter) without charge to the Holder thereof including,  without limitation,
any tax which may be payable in respect of the issuance thereof,

                                        3







and such  certificates  shall  (subject  to the  provisions  of Sections 5 and 7
hereof)  be issued in the name of, or in such names as may be  directed  by, the
Holder thereof; provided, however, that the Company shall not be required to pay
any tax which may be payable in respect of any transfer involved in the issuance
and  delivery  of  any  such  certificates  in a name  other  than  that  of the
Underwriter  and the  Company  shall not be  required  to issue or deliver  such
certificates  unless or until the  person or  persons  requesting  the  issuance
thereof  shall  have paid to the  Company  the  amount of such tax or shall have
established to the satisfaction of the Company that such tax has been paid.

     The Underwriter's  Warrant  Certificates and the certificates  representing
the Common  Stock and  Warrants  issuable  upon  exercise  of the  Underwriter's
Warrants  shall be executed on behalf of the Company by the manual or  facsimile
signature  of the  then  present  Chairman  or Vice  Chairman  of the  Board  of
Directors or President or Vice President of the Company under its corporate seal
reproduced thereon, attested to by the manual or facsimile signature of the then
present Secretary or Assistant Secretary of the Company.  Underwriter's  Warrant
Certificates  shall be dated the date of  execution  by the Company upon initial
issuance, division, exchange, substitution or transfer.

     5. Restriction On Transfer of the Underwriter's  Warrants.  The Holder of a
Underwriter's  Warrant  Certificate,  by its acceptance  thereof,  covenants and
agrees that the  Underwriter's  Warrants are being acquired as an investment and
not with a view to the

                                        4







distribution  thereof;  and that  the  Underwriter's  Warrants  may not be sold,
transferred,  assigned,  hypothecated  or otherwise  disposed of, in whole or in
part, for a period of one (1) year from the date of the Public Offering,  except
to  officers  or partners  of the  Underwriter  or members of the selling  group
and/or their officers and partners.

        6. Exercise Price.

     ss.6.1 Initial and Adjusted Exercise Price. Except as otherwise provided in
Section 8 hereof,  the  initial  exercise  price of each of the shares of Common
Stock and Redeemable  Warrants  underlying the  Underwriter's  Warrants shall be
$____ (120% of the initial public offering prices) and $.30,  respectively.  The
adjusted  exercise price shall be the price which shall result from time to time
from any and all  adjustments of the initial  exercise price in accordance  with
the provisions of Section 8 hereof.

     ss.6.2  Exercise  Price.  The term  "Exercise  Price" herein shall mean the
initial  exercise  price or the  adjusted  exercise  price,  depending  upon the
context.

        7. Registration Rights.

     ss.7.1  Registration  Under the Securities  Act of 1933. The  Underwriter's
Warrants,  the shares of Common Stock and Warrants issuable upon exercise of the
Underwriter's Warrants have been registered pursuant to a registration statement
on form SB-2 (the "Registration Statement") under the Securities Act of 1933, as
amended (the "Act").

                                        5







     ss.7.2   Piggyback   Registration.   If,  at  any  time  commencing   after
____________, 1997, through and including ____________, 2003 (84 months from the
Effective  Date),  the Company  proposes to register any of its securities under
the Act (other than in connection with a merger or pursuant to Form S-8) it will
give written  notice by registered  mail, at least thirty (30) days prior to the
filing of each such registration  statement, to the Underwriter and to all other
Holders of the  Underwriter's  Warrants  and/or the  Common  Stock and  Warrants
underlying  same of its intention to do so. If any of the  Underwriter  or other
Holders  of  the  Underwriter's   Warrants  and/or  Common  Stock  and  Warrants
underlying  same notify the Company within twenty (20) days after receipt of any
such  notice  of its or their  desire to  include  any such  securities  in such
proposed  registration   statement,   the  Company  shall  afford  each  of  the
Underwriter and such Holders of the  Underwriter's  Warrants and/or Common Stock
and Warrants  underlying  same the opportunity to have any such Common Stock and
Warrants underlying same registered under such registration statement.

     Notwithstanding  the provisions of this Section 7.2, the Company shall have
the right at any time after it shall have given written notice  pursuant to this
Section 7.2 (irrespective of whether a written request for inclusion of any such
securities  shall  have  been  made)  to elect  not to file  any  such  proposed
registration  statement,  or to withdraw  the same after the filing but prior to
the effective date thereof.

     ss.7.3 Demand Registration.

                                        6







     (a) At any time commencing after  ______________,  1997 (12 months from the
Effective Date) through and including  ______________,  2001 (60 months from the
Effective Date), the Holders of the  Underwriter's  Warrants and/or Common Stock
and Warrants underlying same representing a "Majority" (as hereinafter  defined)
of such securities (assuming the exercise of all of the Underwriter's  Warrants)
shall have the right  (which  right is in  addition to the  registration  rights
under Section 7.2 hereof), exercisable by written notice to the Company, to have
the  Company  prepare  and  file  with  the  Commission,   on  one  occasion,  a
registration statement and such other documents,  including a prospectus, as may
be  necessary in the opinion of both counsel for the Company and counsel for the
Underwriter  and Holders,  in order to comply with the provisions of the Act, so
as to permit a public  offering  and sale of their  respective  Common Stock and
Warrants underlying same for nine (9) consecutive months by such Holders and any
other  Holders of the  Underwriter's  Warrants  and/or Common Stock and Warrants
underlying  same who notify  the  Company  within ten (10) days after  receiving
notice from the Company of such request.

     (b) The  Company  covenants  and  agrees  to  give  written  notice  of any
registration  request  under  this  Section  7.3 by any Holder or Holders to all
other registered Holders of the Underwriter's  Warrants and the Common Stock and
Warrants  underlying  same  within ten (10) days from the date of the receipt of
any such registration request.

                                        7







     (c) In addition to the registration rights under Section 7.2 and subsection
(a) of this Section 7.3, at any time commencing after  ______________,  1997 (12
months from the Effective Date) through and including  ______________,  2001 (60
months  from the  Effective  Date),  any  Holder or  Holders  of a  Majority  of
Underwriter's  Warrants  and/or  shares of Common Stock and Warrants  underlying
same shall have the right,  exercisable  by written  request to the Company,  to
have the Company  prepare  and file,  on one  occasion,  with the  Commission  a
registration  statement so as to permit a public  offering and sale for nine (9)
consecutive months by any such Holder or Holders,  provided,  however,  that the
provisions  of Section  7.4(b)  hereof shall not apply to any such  registration
request and  registration and all costs incident thereto shall be at the expense
of the Holder or Holders making such request.

     (d)  Notwithstanding  anything to the  contrary  contained  herein,  if the
Company shall not have filed a  registration  statement for the shares of Common
Stock, Warrants and shares of Common Stock underlying the Underwriter's Warrants
within the time  period  specified  in Section  7.4(a)  hereof  pursuant  to the
written  notice  specified in Section 7.3(a) of a Majority of the Holders of the
Underwriter's  Warrants  and/or  shares of Common Stock and Warrants  underlying
same,  the Company agrees that upon the written notice of election of a Majority
of the Holders of the  Underwriter's  Warrants  and/or Common Stock and Warrants
underlying  same it shall  repurchase  (i) any and all Common Stock and Warrants
underlying the

                                        8







Underwriter's  Warrants  at the higher of the  Market  Price per share of Common
Stock on (x) the date of the notice sent  pursuant to Section  7.3(a) or (y) the
expiration  of the  period  specified  in  Section  7.4(a)  and (ii) any and all
Warrants at such Market Price less the  exercise  prices of such  Warrant.  Such
repurchase  shall be in immediately  available  funds and shall close within two
(2) days  after the  later of (i) the  expiration  of the  period  specified  in
Section 7.4(a) or (ii) the delivery of the written notice of election  specified
in this Section 7.3(d).

     ss.7.4 Covenants of the Company With Respect to Registration. In connection
with any registration under Section 7.2 or 7.3 hereof, the Company covenants and
agrees as follows:

     (a) The Company shall use its best efforts to file a registration statement
within  thirty (30) days of receipt of any demand  therefor,  shall use its best
efforts to have any registration  statement  declared  effective at the earliest
possible  time,  and shall  furnish  each Holder  desiring to sell Common  Stock
and/or  Warrants   underlying  the  Underwriter's   Warrants,   such  number  of
prospectuses as shall reasonably be requested.

     (b) The  Company  shall  pay all  costs  (excluding  fees and  expenses  of
Holder(s)  counsel  and any  underwriting  or  selling  commissions),  fees  and
expenses  in  connection  with all  registration  statements  filed  pursuant to
Sections 7.2 and 7.3(a)  hereof  including,  without  limitation,  the Company's
legal and accounting fees,  printing  expenses,  and blue sky fees and expenses.
The

                                        9







Holder(s)  will  pay all  costs,  fees  and  expenses  in  connection  with  any
registration  statement filed pursuant to Section  7.3(c).  If the Company shall
fail to comply with the  provisions of Section  7.4(a),  the Company  shall,  in
addition to any other equitable or other relief  available to the Holder(s),  be
liable for any or all incidental,  special and consequential damages and damages
due to loss of profit  sustained by the  Holder(s)  requesting  registration  of
their Warrant Shares.

     (c) The Company  will take all  necessary  action  which may be required in
qualifying  or  registering  the  Common  Stock  and  Warrants   underlying  the
Underwriter's  Warrants  included in a  registration  statement for offering and
sale under the  securities  or blue sky laws of such  states as  reasonably  are
requested by the Holder(s),  provided that the Company shall not be obligated to
execute  or file any  general  consent  to service of process or to qualify as a
foreign corporation to do business under the laws of any such jurisdiction.

     (d) The Company  shall  indemnify  the  Holder(s)  of the Common  Stock and
Warrants  underlying same to be sold pursuant to any registration  statement and
each person,  if any, who controls such Holders within the meaning of Section 15
of the Act or Section 20(a) of the  Securities  Exchange Act of 1934, as amended
("Exchange  Act"),  against  all  loss,  claim,  damage,  expense  or  liability
(including  all  expenses  reasonably  incurred in  investigating,  preparing or
defending  against any claim whatsoever) to which any of them may become subject
under the Act, the Exchange Act or

                                       10







otherwise,  arising from such registration statement but only to the same extent
and with the same  effect as the  provisions  pursuant  to which the Company has
agreed to indemnify the Underwriter  contained in Section 7 of the  Underwriting
Agreement.

     (e)  The  Holder(s)  of  the  Common  Stock  and  Warrants  underlying  the
Underwriter's  Warrants to be sold  pursuant to a  registration  statement,  and
their successors and assigns,  shall severally,  and not jointly,  indemnify the
Company,  its officers and directors  and each person,  if any, who controls the
Company  within the  meaning  of  Section 15 of the Act or Section  20(a) of the
Exchange Act, against all loss, claim, damage or expense or liability (including
all  expenses  reasonably  incurred in  investigating,  preparing  or  defending
against any claim  whatsoever)  to which they may become  subject under the Act,
the  Exchange Act or  otherwise,  arising  from  information  furnished by or on
behalf of such Holders,  or their successors or assigns,  for specific inclusion
in such  registration  statement  to the same extent and with the same effect as
the provisions contained in Section 7 of the Underwriting  Agreement pursuant to
which the Underwriter has agreed to indemnify the Company.

     (f) Nothing contained in this Agreement shall be construed as requiring the
Holder(s) to exercise their  Underwriter's  Warrants prior to the initial filing
of any registration statement or the effectiveness thereof.

     (g) The Company shall not permit the inclusion of any securities other than
the Common Stock and Warrants underlying the

                                       11







Underwriter's  Warrants  to be  included  in any  registration  statement  filed
pursuant to Section 7.3 hereof, or permit any other registration statement to be
or remain effective during the  effectiveness of a registration  statement filed
pursuant to Section 7.3 hereof, without the prior written consent of the Holders
of the  Underwriter's  Warrants and Common Stock and  Warrants  underlying  same
representing a Majority of such securities.



     (h) The Company shall furnish to each Holder  participating in the offering
and to each underwriter, if any, a signed counterpart,  addressed to such Holder
or underwriter, of (i) an opinion of counsel to the Company, dated the effective
date of such  registration  statement  (and,  if such  registration  includes an
underwritten public offering, an opinion dated the date of the closing under the
underwriting  agreement),  and (ii) a "cold comfort"  letter dated the effective
date of such  registration  statement  (and,  if such  registration  includes an
underwritten  public offering,  a letter dated the date of the closing under the
underwriting  agreement) signed by the independent  public  accountants who have
issued  a  report  on  the  Company's  financial  statements  included  in  such
registration  statement,  in each case covering  substantially  the same matters
with  respect  to such  registration  statement  (and  the  prospectus  included
therein) and, in the case of such  accountants'  letter,  with respect to events
subsequent to the date of such financial statements,  as are customarily covered
in opinions of issuer's counsel and in

                                       12







accountants'  letters delivered to underwriters in underwritten public offerings
of securities.

     (i) The Company shall as soon as  practicable  after the effective  date of
the registration statement,  and in any event within 15 months thereafter,  have
made "generally  available to its security  holders" (within the meaning of Rule
158 under the Act) an earnings  statement (which need not be audited)  complying
with Section  11(a) of the Act and covering a period of at least 12  consecutive
months beginning after the effective date of the registration statement.

     (j) The Company shall deliver promptly to each Holder  participating in the
offering  requesting the correspondence  and memoranda  described below, and the
managing  underwriters,  copies of all correspondence between the Commission and
the Company,  its counsel or auditors and all memoranda  relating to discussions
with the Commission or its staff with respect to the registration  statement and
permit each Holder and  underwriter to do such  investigation,  upon  reasonable
advance  notice,  with respect to  information  contained in or omitted from the
registration   statement  as  it  deems  reasonably  necessary  to  comply  with
applicable  securities  laws or rules of the National  Association of Securities
Dealers,  Inc.  ("NASD").  Such  investigation  shall  include  access to books,
records and properties and  opportunities to discuss the business of the Company
with its officers and independent auditors, all to such reasonable extent and at
such reasonable times and as often as any such Holder shall reasonably request.

                                       13







     (k) The  Company  shall  enter  into an  underwriting  agreement  with  the
managing  underwriters  selected  for such  underwriting  by  Holders  holding a
Majority  of the Common  Stock and  Warrants  underlying  same  requested  to be
included in such underwriting.  Such agreement shall be satisfactory in form and
substance to the Company, each Holder and such managing underwriters,  and shall
contain such  representations,  warranties and covenants by the Company and such
other terms as are customarily  contained in agreements of that type used by the
managing underwriter.

     The Holders shall be parties to any underwriting  agreement  relating to an
underwritten sale of their Common Stock and Warrants underlying same and may, at
their  option,  require  that  any or all the  representations,  warranties  and
covenants of the Company to or for the benefit of such  underwriters  shall also
be made to and for the  benefit  of such  Holders.  Such  Holders  shall  not be
required to make any  representations  or warranties  to or agreements  with the
Company or the  underwriters  except as they may relate to such  Holders,  their
intended methods of distribution,  and except for matters related to disclosures
with respect to such  Holders,  contained or required to be  contained,  in such
registration statement under the Act and the rules and regulations thereunder.

     (1) For purposes of this Agreement, the term "Majority" in reference to the
Holders of Underwriter's  Warrants,  shall mean in excess of fifty percent (50%)
of the then outstanding  Underwriter's  Warrants assuming full exercise thereof,
and shares of Common Stock underlying the Warrants, underlying the Underwriter's
Warrants that

                                       14







(i) are not held by the Company, an affiliate,  officer,  creditor,  employee or
agent thereof or any of their respective affiliates,  members of their families,
persons  acting as nominees or in  conjunction  therewith  or (ii) have not been
resold  to the  public  pursuant  to Rule 144  under  the Act or a  registration
statement filed with the Commission under the Act.

        8. Adjustments to Exercise Price and Number of Securities.

        ss.8.1 Intentionally Omitted.

        ss.8.2 Intentionally Omitted.

        ss.8.3 Subdivision and Combination. In case the  Company  shall  at  any
time subdivide or combine the outstanding  shares of Common Stock,  the Exercise
Price shall forthwith be proportionately decreased in the case of subdivision or
increased in the case of combination.

        ss.8.4 Adjustment in Number of Securities.  Upon each  adjustment of the
Exercise  Price  pursuant  to the  provisions  of this  Section 8, the number of
shares of Common Stock underlying the  Underwriter's  Warrants shall be adjusted
to the nearest full amount by  multiplying a number equal to the Exercise  Price
in effect immediately prior to such adjustment by the number of shares of Common
Stock  underlying  same  issuable upon  exercise of the  Underwriter's  Warrants
immediately prior to such adjustment and dividing the product so obtained by the
adjusted Exercise Price.

        ss.8.5   Definition  of Common Stock. For the purpose of this Agreement,
the term "Common  Stock" shall mean (i) the class of stock  designated as Common
Stock in the Certificate of

                                       15







Incorporation of the Company as amended as of the date hereof, or (ii) any other
class of stock resulting from successive  changes or  reclassifications  of such
Common Stock, consisting solely of changes in par value, or from par value to no
par  value,  or from no par value to par value.  In the event  that the  Company
shall  after the date  hereof  issue a class of Common  Stock  with  greater  or
superior  voting  rights than the shares of Common Stock  outstanding  as of the
date hereof, the Holder, at its option, may receive upon exercise of any Warrant
either shares of Common Stock or a like number of such  securities  with greater
or superior voting rights.


     ss.8.6 Merger or Consolidation. In case of any consolidation of the Company
with,  or merger of the Company  with,  or merger of the Company  into,  another
corporation  (other than a consolidation  or merger which does not result in any
reclassification  or change of the  outstanding  Common Stock),  the corporation
formed by such  consolidation or merger shall execute and deliver to each Holder
a supplemental warrant agreement providing that each Holder shall have the right
thereafter  (until the expiration of such Warrant) to receive,  upon exercise of
such Warrant,  the kind and amount of shares of stock and other  securities  and
property receivable upon such consolidation or merger, by a holder of the number
of shares of Common Stock of the Company for which such Warrant  might have been
exercised  immediately prior to such consolidation or merger.  Such supplemental
warrant  agreement shall provide for adjustments which shall be identical to the
adjustments provided in Section 8.

                                       16







The above  provision of this  subsection  shall  similarly  apply to  successive
consolidations or mergers.

     ss.8.7 No Adjustment of Exercise Price in Certain  Cases.  No adjustment of
the Exercise Price shall be made:

                 (a) Upon the issuance or sale of the Underwriter's  Warrants or
         the  shares of  Common  Stock  issuable  upon the  exercise  of (i) the
         Underwriter's  Warrants, (ii) the Warrants underlying the Underwriter's
         Warrants, (iii) the options and warrants outstanding on the date hereof
         and described in the prospectus relating to the Public Offering or (iv)
         up to an  aggregate  of 450,000  shares  issuable  upon the exercise of
         options granted under the Company's 1996 Stock Option Plan; or

                 (b) If the  amount  of such  adjustment  shall be less than two
         cents  ($.02)  per  share,  provided,  however,  that in such  case any
         adjustment  that would  otherwise be required  then to be made shall be
         carried  forward and shall be made at the time of and together with the
         next  subsequent  adjustment  which,  together  with any  adjustment so
         carried  forward,  shall amount to at least two cents ($.02) per share.

         ss.8.9  Dividends  and  Other  Distributions.  In  the  event  that the
Company  shall at any time prior to the exercise of all  Underwriter's  Warrants
declare a dividend (other than a dividend  consisting solely of shares of Common
Stock) or otherwise distribute to its stockholders any assets, property, rights,
evidences  of  indebtedness,  securities  (other than  shares of Common  Stock),
whether issued by the Company or by another, or any other

                                       17







thing of value,  the Holders of the  unexercised  Underwriter's  Warrants  shall
thereafter  be  entitled,  in  addition  to the shares of Common  Stock or other
securities and property receivable upon the exercise thereof,  to receive,  upon
the exercise of such Underwriter's Warrants, the same property,  assets, rights,
evidences  of  indebtedness,  securities  or any other  thing of value that they
would have been entitled to receive at the time of such dividend or distribution
as if the  Underwriter's  Warrants had been exercised  immediately  prior to the
record date for such dividend or distribution.  At the time of any such dividend
or  distribution,  the  Company  shall make  appropriate  reserves to ensure the
timely performance of the provisions of this subsection 8.9.


     ss.8.10 Adjustment of the Redeemable Warrants.

     Notwithstanding this Section 8, any adjustment of the exercise price and/or
the  number of  shares of Common  Stock  purchasable  upon the  exercise  of the
Redeemable  Warrants  underlying the Underwriter's  Warrants shall be determined
solely by the anti- dilution and other adjustment provisions provided for by the
terms of a certain Warrant Agreement date ___________,  1996 between the Company
and North American Transfer Co. (the "Warrant Agreement") provided however, that
the term "Warrant Price" as used in said Warrant Agreement shall be deemed to be
$_____  when  applied  to the  Common  Stock  issued  pursuant  to the  Warrants
hereunder, and not by the provisions of this Section 8, and notice thereof shall
be given as provided in said Warrant Agreement to the holders of the Warrants.

                                       18







     9.  Exchange  and  Replacement  of  Warrant   Certificates.   Each  Warrant
Certificate is exchangeable  without expense,  upon the surrender thereof by the
registered  Holder at the principal  executive office of the Company,  for a new
Warrant  Certificate  of like tenor and date  representing  in the aggregate the
right to  purchase  the same  number  of shares  of  Common  Stock and  Warrants
underlying  same in such  denominations  as shall be  designated  by the  Holder
thereof at the time of such surrender.

     Upon receipt by the Company of evidence  reasonably  satisfactory  to it of
the loss, theft,  destruction or mutilation of any Warrant Certificate,  and, in
case of  loss,  theft  or  destruction,  of  indemnity  or  security  reasonably
satisfactory to it, and reimbursement to the Company of all reasonable  expenses
incidental  thereto,  and upon surrender and  cancellation of the  Underwriter's
Warrants,  if  mutilated,  the  Company  will  make and  deliver  a new  Warrant
Certificate of like tenor, in lieu thereof.

     10. Elimination of Fractional Interests.  The Company shall not be required
to issue certificates  representing fractions of shares of Common Stock upon the
exercise of the Underwriter's Warrants or Warrants underlying same, nor shall it
be required to issue scrip or pay cash in lieu of fractional interests, it being
the intent of the parties that all fractional  interests  shall be eliminated by
rounding any  fraction up to the nearest  whole number of shares of Common Stock
or other securities, properties or rights.

     11.  Reservation and Listing of Securities.  The Company shall at all times
reserve and keep available out of its authorized

                                       19







shares of Common Stock,  solely for the purpose of issuance upon the exercise of
the Underwriter's  Warrants and Warrants  underlying same, such number of shares
of Common Stock or other  securities,  properties or rights as shall be issuable
upon the exercise thereof.  The Company covenants and agrees that, upon exercise
of the  Underwriter's  Warrants and Warrants  underlying same and payment of the
exercise  prices  therefor,  all  shares  of Common  Stock and other  securities
issuable  upon such  exercise  shall be duly and  validly  issued,  fully  paid,
non-assessable  and not subject to the preemptive rights of any stockholder.  As
long as the Underwriter's  Warrants shall be outstanding,  the Company shall use
its best efforts to cause all shares of Common Stock  issuable upon the exercise
of the Underwriter's Warrants and Warrants underlying same to be listed (subject
to official notice of issuance) on all securities  exchanges on which the Common
Stock  issued to the public in  connection  herewith  may then be listed  and/or
quoted on NASDAQ.

     12. Notices to Warrant Holders.  Nothing  contained in this Agreement shall
be construed as  conferring  upon the Holders the right to vote or to consent or
to receive  notice as a stockholder  in respect of any meetings of  stockholders
for the  election  of  directors  or any other  matter,  or as having any rights
whatsoever as a stockholder of the Company.  If,  however,  at any time prior to
the  expiration of the  Underwriter's  Warrants and their  exercise,  any of the
following events shall occur:

               (a) the Company  shall take a record of the holders of its shares
        of Common Stock for the purpose of entitling them to

                                       20







        receive a dividend or distribution  payable otherwise than in cash, or a
        cash dividend or distribution  payable  otherwise than out of current or
        retained  earnings,  as  indicated by the  accounting  treatment of such
        dividend or distribution on the books of the Company; or

               (b) the  Company  shall  offer to all the  holders  of its Common
        Stock  any  additional  shares  of  capital  stock  of  the  Company  or
        securities  convertible into or exchangeable for shares of capital stock
        of the Company,  or any option,  right or warrant to subscribe therefor;
        or

               (c) a  dissolution,  liquidation  or  winding  up of the  Company
        (other than in connection with a  consolidation  or merger) or a sale of
        all or  substantially  all of its  property  assets and  business  as an
        entirety shall be proposed;  then, in any one or more of such events the
        Company  shall give written  notice of such event at least  fifteen (15)
        days prior to the date fixed as a record date or the date of closing the
        transfer books for the  determination  of the  stockholders  entitled to
        such dividend,  distribution,  convertible or exchangeable securities or
        subscription  rights, or entitled to vote on such proposed  dissolution,
        liquidation,  winding up or sale.  Such notice shall specify such record
        date or the date of  closing  the  transfer  books,  as the case may be.
        Failure to give such notice or any defect  therein  shall not affect the
        validity  of any action  taken in  connection  with the  declaration  or
        payment of any such dividend, or the issuance

                                              21







        of any convertible or exchangeable  securities,  or subscription rights,
        options or warrants, or any proposed dissolution,  liquidation,  winding
        up or sale

        13. Notices.

        All notices requests,  consents and other communications hereunder shall
be in  writing  and shall be deemed  to have been duly made when  delivered,  or
mailed by registered or certified mail, return receipt requested:

               (a) If to the registered Holder of the Underwriter's Warrants, to
        the address of such Holder as shown on the books of the Company; or

               (b) If to the  Company,  to the  address  set forth in  Section 3
        hereof or to such other  address as the Company may  designate by notice
        to the Holders.


        14. Supplements and Amendments. The Company and the Underwriter may from
time to time  supplement  or amend this  Agreement  without the  approval of any
holders of Warrant  Certificates  (other than the  Underwriter) in order to cure
any ambiguity, to correct or supplement any provision contained herein which may
be defective or  inconsistent  with any  provisions  herein or to make any other
provisions in regard to matters or questions arising hereunder which the Company
and the  Underwriter  may deem  necessary or desirable and which the Company and
the Underwriter  deem shall not adversely affect the interests of the Holders of
Warrant Certificates.

                                       22







        15. Successors. All the covenants and provisions of this Agreement shall
be binding upon and inure to the benefit of the  Company,  the Holders and their
respective successors and assigns hereunder.

        16. Termination. This Agreement shall terminate at the close of business
on  ___________,   2003.  Notwithstanding  the  foregoing,  the  indemnification
provisions  of  Section  7 shall  survive  such  termination  until the close of
business on ____________, 2006.

        17. Governing Law:  Submission to Jurisdiction.  This Agreement and each
Warrant Certificate issued hereunder shall be deemed to be a contract made under
the laws of the State of New York and for all  purposes  shall be  construed  in
accordance  with the laws of such State  without  giving  effect to the rules of
said State governing the conflicts of laws.

        The  Company,  the  Underwriter  and the Holders  hereby  agree that any
action,  proceeding  or claim  against it arising out of, or relating in any way
to, this  Agreement  shall be brought and enforced in the courts of the State of
New York or of the United  States of America  for the  Southern  District of New
York, and irrevocably submits to such jurisdiction,  which jurisdiction shall be
exclusive. The Company, the Underwriter and the Holders hereby irrevocably waive
any objection to such exclusive  jurisdiction  or inconvenient  forum.  Any such
process or summons to be served upon any of the Company, the Underwriter and the
Holders (at the option of the party  bringing such action,  proceeding or claim)
may be served by transmitting a copy thereof, by registered or certified

                                       23







mail, return receipt requested,  postage prepaid, addressed to it at the address
set forth in Section 3 hereof. Such mailing shall be deemed personal service and
shall be legal and binding upon the party so served in any action, proceeding or
claim.  The Company,  the  Underwriter and the Holders agree that the prevailing
party(ies)  in any such action or  proceeding  shall be entitled to recover from
the other  party(ies)  all of  its/their  reasonable  legal  costs and  expenses
relating to such action or proceeding  and/or  incurred in  connection  with the
preparation therefor.

        18.  Entire  Agreement:  Modification.  This  Agreement  (including  the
Underwriting  Agreement to the extent  portions  thereof are referred to herein)
contains the entire understanding between the parties hereto with respect to the
subject  matter  hereof and may not be modified  or amended  except by a writing
duly  signed  by the party  against  whom  enforcement  of the  modification  or
amendment is sought.

        19. Severability. If any provision of this Agreement shall be held to be
invalid or unenforceable,  such invalidity or unenforceability  shall not affect
any other provision of this Agreement.

        20. Captions. The caption headings of the Sections of this Agreement are
for  convenience  of  reference  only and are not  intended,  nor should they be
construed as, a part of this Agreement and shall be given no substantive effect.

        21.  Benefits  or this  Agreement.  Nothing in this  Agreement  shall be
construed to give to any person or corporation other than

                                       24







the  Company  and the  Underwriter  and any other  registered  Holder(s)  of the
Warrant  Certificates or Common Stock and Warrants  underlying same any legal or
equitable right, remedy or claim under this Agreement;  and this Agreement shall
be for the sole and exclusive benefit of the Company and the Underwriter and any
other Holder(s) of the Warrant Certificates or Warrant Shares.

        22.  Counterparts.  This  Agreement  may be  executed  in any  number of
counterparts and each of such  counterparts  shall for all purposes be deemed to
be an original,  and such counterparts shall together constitute but one and the
same instrument.

        IN WITNESS WHEREOF,  the parties hereto have caused this Agreement to be
duly executed, as of the day and year first above written.

 [SEAL]                         TTR, Inc.

                             By
                                ------------------------------------
                                Marc Tokayer
                                President

Attest:

- -----------------------------------
Secretary

                                FIRST METROPOLITAN SECURITIES, INC.

                             By 
                                -------------------------------------
                                Name:
                                Title:

                                       25







                                                                       EXHIBIT A

                          [FORM OF WARRANT CERTIFICATE]

THE  UNDERWRITER'S  WARRANTS  REPRESENTED  BY THIS  CERTIFICATE  AND  THE  OTHER
SECURITIES  ISSUABLE  UPON  EXERCISE  THEREOF  MAY NOT BE OFFERED OR SOLD EXCEPT
PURSUANT TO (i) AN EFFECTIVE  REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF
1933,  (ii) TO THE EXTENT  APPLICABLE,  RULE 144 UNDER SUCH ACT (OR ANY  SIMILAR
RULE UNDER SUCH ACT  RELATING TO THE  DISPOSITION  OF  SECURITIES),  OR (iii) AN
OPINION OF COUNSEL, IF SUCH OPINION SHALL BE REASONABLY  SATISFACTORY TO COUNSEL
FOR THE ISSUER, THAT AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT IS AVAILABLE.

THE  TRANSFER OR  EXCHANGE OF THE  UNDERWRITER'S  WARRANTS  REPRESENTED  BY THIS
CERTIFICATE IS RESTRICTED IN ACCORDANCE WITH THE WARRANT  AGREEMENT  REFERRED TO
HEREIN.

                            EXERCISABLE ON OR BEFORE
                         5:30 P.M., NEW YORK TIME , 2001

No. W-                                         __________ Underwriter's Warrants

                               WARRANT CERTIFICATE

        This  Warrant  Certificate  certifies  that ___________,  or  registered
assigns,  is  the  registered  holder  of ___________ Underwriter's  Warrants to
purchase  initially,  at  any  time  from ___________, 1996 [one  year  from the
effective  date of the  Registration  Statement] until 5:30 p.m. New  York  time
on , 2000 [four years from the  effective  date of  the Underwriting  Agreement]
("Expiration  Date"), up to  127,500  fully-paid  and  non-assessable  share  of
common  stock,  par value $.001 per share ("Common Stock") and 60,000 redeemable
Common Stock purchase warrant ("Warrants") of TTR, Inc., a New York  corporation
(the  "Company"), at the initial  exercise  prices,  subject  to  adjustment  in
certain events (the "Exercise  Prices"),  of  $_______ and  $.30,  respectively,
upon surrender of this Warrant  Certificate and payment of  the  Exercise  Price
at an office or agency of the  Company,  but subject to the conditions set forth
herein and in the Underwriter's  warrant agreement dated as of ___________, 1996
 between  the   Company   and   First   Metropolitan   Securities,   Inc.   (the
"Underwriter's Warrant Agreement"). Payment of the Exercise Prices

                                        1







shall be made by certified  or official  bank check in New York  Clearing  House
funds payable to the order of the Company.

        No  Underwriter's  Warrant may be  exercised  after 5:30 p.m.,  New York
time, on the Expiration Date, at which time all Underwriter's Warrants evidenced
hereby, unless exercised prior thereto, hereby shall thereafter be void.

        The  Underwriter's  Warrants  evidenced by this Warrant  Certificate are
part of a duly authorized issue of shares of Common Stock and Warrants  pursuant
to the Underwriter's  Warrant Agreement,  which agreement is hereby incorporated
by reference in and made a part of this instrument and is hereby referred to for
a  description  of the rights,  limitation  of rights,  obligations,  duties and
immunities  thereunder  of the Company and the holders  (the words  "holders" or
"holder"   meaning  the  registered   holders  or  registered   holder)  of  the
Underwriter's Warrants.

        The Underwriter's Warrant Agreement provides that upon the occurrence of
certain  events the Exercise  Price and/or  number of the  Company's  securities
issuable  thereupon may,  subject to certain  conditions,  be adjusted.  In such
event,  the Company  will,  at the  request of the  holder,  issue a new Warrant
Certificate  evidencing  the  adjustment  in the  Exercise  Price and the number
and/or  type of  securities  issuable  upon the  exercise  of the  Underwriter's
Warrants;  provided,  however, that the failure of the Company to issue such new
Warrant Certificates shall not in any way change, alter or otherwise impair, the
rights of the holder as set forth in the Underwriter's Warrant Agreement.

        Upon due  presentment  for  registration  of  transfer  of this  Warrant
Certificate at an office or agency of the Company, a new Warrant  Certificate or
Warrant Certificates of like tenor and evidencing in the aggregate a like number
of Underwriter's  Warrants shall be issued to the  transferee(s) in exchange for
this Warrant Certificate,  subject to the limitations provided herein and in the
Underwriter's Warrant Agreement,  without any charge except for any tax or other
governmental charge imposed in connection with such transfer.

        Upon  the  exercise  of  less  than  all of the  Underwriter's  Warrants
evidenced by this  Certificate,  the Company shall forthwith issue to the holder
hereof  a  new  Warrant  Certificate   representing  such  numbered  unexercised
Underwriter's Warrants.

        The Company may deem and treat the  registered  holder(s)  hereof as the
absolute owner(s) of this Warrant Certificate  (notwithstanding  any notation of
ownership  or other  writing  hereon  made by  anyone),  for the  purpose of any
exercise hereof,  and of any distribution to the holder(s)  hereof,  and for all
other  purposes,  and the  Company  shall not be  affected  by any notice to the
contrary.

                                        2








        All terms  used in this  Warrant  Certificate  which are  defined in the
Underwriter's  Warrant Agreement shall have the meanings assigned to them in the
Underwriter's Warrant Agreement.

        IN WITNESS WHEREOF,  the Company has caused this Warrant  Certificate to
be duly executed under its corporate seal.

Dated as of __________________, 1996

                               TTR, Inc.

[SEAL]                       By 
                                ---------------------------------
                                Name:
                               Title: President

Attest:


- --------------------------------
Secretary

                                        3







                         [FORM OF ELECTION TO PURCHASE]

        The  undersigned  hereby  irrevocably  elects  to  exercise  the  right,
represented by this Warrant Certificate,  to purchase  ______________  shares of
Common Stock and _____________ Warrants,  underlying the Underwriter's Warrants,
and herewith tenders in payment for such securities a certified or official bank
check payable in New York Clearing  House Funds to the order of TTR, Inc. in the
amount of $_________,  all in accordance with the terms hereof.  The undersigned
requests that a  certificates  for such  securities be registered in the name of
_______________ whose address is _______________________________ and  that  such
Certificate be delivered to  _________________  whose address is ______________.

Dated:

                                                   Signature ___________________
                                                   (Signature  must  conform  in
                                                   all   respects   to  name  of
                                                   holder  as  specified  on the
                                                   face    of    the     Warrant
                                                   Certificate.)

                                                   _____________________________
                                                   Insert Social Security or
                                                   Other Identifying Number of
                                                   Holder)