EXHIBIT 4.1


     THE  SECURITIES   REPRESENTED  HEREBY  (THE  "SECURITIES")  HAVE  NOT  BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES  ACT"),
OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE SOLD OR OFFERED FOR SALE IN
THE ABSENCE OF AN EFFECTIVE  REGISTRATION  STATEMENT  FOR THE  SECURITIES  OR AN
OPINION OF COUNSEL OR OTHER  EVIDENCE  ACCEPTABLE TO THE  CORPORATION  THAT SUCH
REGISTRATION IS NOT REQUIRED.


                          COMMON STOCK PURCHASE WARRANT


                              XYBERNAUT CORPORATION


                             EXPIRES AUGUST 29, 2005


No.:  W-A02-1                                       Number of Shares:  2,857,143
Date of Issuance:  August 29, 2002


          1. Issuance. For good and valuable consideration, the receipt of which
is hereby  acknowledged by Xybernaut  Corporation,  a Delaware  corporation (the
"Company"),  Rewell Holdings,  Ltd., or its registered assigns (the "Holder") is
hereby  granted the right to purchase at any time until 5:00 P.M., New York City
time,  on August 29, 2005 (the  "Expiration  Date"),  Two Million  Eight Hundred
Fifty Seven Thousand One Hundred Forty Three (2,857,143) shares of the Company's
Common  Stock,  par value  $.01 per share  (the  "Common  Stock")  at an initial
exercise  price of $1.50 per share (the  "Exercise  Price"),  subject to further
adjustment as set forth in Section 6 hereof.

          2. Exercise of Warrants.  This Warrant is  exercisable  in whole or in
part at the Exercise Price per share of Common Stock payable hereunder,  payable
in cash or by certified or official bank check.  Upon  surrender of this Warrant
Certificate  with the annexed  Notice of Exercise Form duly  executed,  together
with payment of the Exercise Price for the shares of Common Stock purchased, the
Holder shall be entitled to receive a certificate or certificates for the shares
of Common Stock so purchased.

          3. Reservation of Shares.  The Company hereby agrees that at all times
during the term of this  Warrant  there  shall be  reserved  for  issuance  upon
exercise of this  Warrant  such number of shares of its Common Stock as shall be
required for issuance upon exercise of this Warrant (the "Warrant Shares").

          4.  Mutilation  or Loss of  Warrant.  Upon  receipt by the  Company of
evidence  satisfactory  to it of the loss,  theft,  destruction or mutilation of
this  Warrant,  and (in the  case of  loss,  theft or  destruction)  receipt  of
reasonably  satisfactory  indemnification,  and (in the case of




mutilation)  upon surrender and  cancellation of this Warrant,  the Company will
execute  and  deliver a new  Warrant  of like  tenor and date and any such lost,
stolen, destroyed or mutilated Warrant shall thereupon become void.

          5. Rights of the Holder.  The Holder shall not, by virtue  hereof,  be
entitled to any rights of a stockholder in the Company, either at law or equity,
and the rights of the Holder are limited to those  expressed in this Warrant and
are not enforceable against the Company except to the extent set forth herein.

          6. Protection Against Dilution.

             (a) Adjustment Mechanism. If an adjustment of the Exercise Price is
required  pursuant to this  Section 6, the Holder  shall be entitled to purchase
such  number of  additional  shares of Common  Stock as will cause (i) the total
number of shares of Common Stock Holder is entitled to purchase pursuant to this
Warrant,  multiplied  by (ii) the adjusted  purchase  price per share,  to equal
(iii) the dollar  amount of the total number of shares of Common Stock Holder is
entitled to purchase  before  adjustment  multiplied by the total purchase price
before adjustment.

             (b)  Capital  Adjustments.  In case of any stock  split or  reverse
stock   split,   stock   dividend,   reclassification   of  the  Common   Stock,
recapitalization,  merger or consolidation, or like capital adjustment affecting
the Common  Stock of the  Company,  the  provisions  of this  Section 6 shall be
applied as if such capital  adjustment event had occurred  immediately  prior to
the date of this  Warrant  and the  original  purchase  price  had  been  fairly
allocated  to the stock  resulting  from such capital  adjustment;  and in other
respects the provisions of this Section 6 shall be applied in a fair,  equitable
and reasonable manner so as to give effect, as nearly as may be, to the purposes
hereof. A rights offering to stockholders of the Company shall be deemed a stock
dividend to the extent of the bargain purchase element of the rights.

          7.  Warrant  Call.  At any  time  or  from  time  to  time  after  the
Registration  Statement  (as defined in Section 9(b)  hereof) has been  declared
effective,  the Company,  at its option,  may, upon written notice to the Holder
(the "Call  Notice"),  call up to one hundred  percent (100%) of this Warrant if
the Common  Stock trades at a price equal to or greater than $3.00 per share for
five (5)  consecutive  trading  days  prior to the date the  Company  calls  the
Warrant.  To be  effective,  the Call Notice must be given  within ten (10) days
after the aforementioned  five (5) day period. The rights and privileges granted
pursuant to this Warrant with respect to such Warrant Shares subject to the Call
Notice shall  terminate if this  Warrant is not  exercised  with respect to such
Warrant  Shares by the  Holder  within  ten (10) days  after the Call  Notice is
received by the Holder.  In the event that this Warrant is not  exercised by the
Holder  with  respect to the Warrant  Shares  subject to the Call  Notice,  this
Warrant shall expire at 5:00 p.m.  eastern time on the call date and the Company
will remit to the Holder $0.01 per Warrant  Share and a new Warrant  certificate
representing  the number of Warrant  Shares,  if any, with respect to which this
Warrant  has not been  exercised  or subject to a Call  Notice  upon such Holder
tendering to the Company the expired Warrant certificate.

          8.  Limitation on Exercise.  Notwithstanding  anything to the contrary
set forth in this Warrant or the Common Stock and Warrant Purchase  Agreement of
even date herewith



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(the  "Purchase  Agreement"),  the Holder shall not be entitled to exercise this
Warrant and the Company shall have no obligation to issue shares of Common Stock
upon such  exercise  of all or any portion of this  Warrant to the extent  that,
following such exercise,  the Beneficial  Ownership Number (as defined below) is
equal to or  greater  than  4.99% of the  outstanding  shares  of  Common  Stock
(including  the  shares  to  be  issued  to  the  Holder  upon  such  exercise).
Notwithstanding  the  foregoing,  this Section 8 shall have no further force and
effect if there is an  outstanding  tender offer for any or all of the shares of
the Company's  Common  Stock,  or the Holder,  at its option,  provides at least
sixty-five (65) days' advance written notice from the Holder that this Section 8
shall  have  no  further  force  and  effect.  For  purposes  of  this  Section,
"Beneficial Ownership Number" shall equal the sum of (i) the number of shares of
Common Stock owned by the Holder and its affiliates (other than shares of Common
Stock  which may be deemed  beneficially  owned  through  the  ownership  of the
unexercised  portion of the Warrant or other rights to purchase  Common Stock or
through the ownership of convertible securities),  and (ii) the number of shares
of Common Stock issuable upon the exercise of the Warrant.  For purposes of this
Section,  "beneficial  ownership" shall be determined in accordance with Section
13(d) of the  Securities  Exchange Act of 1934, as amended.  The Holder,  by its
acceptance  of this  Warrant,  further  agrees that if the Holder  transfers  or
assigns any of the Warrants to any party,  such assignment shall be made subject
to  the  transferee's  or  assignee's  specific  agreement  to be  bound  by the
provisions of this Section 8 as if such transferee or assignee were the original
Holder hereof.

          9. Transfer to Comply with the Securities Act; Registration Rights.

             (a) This Warrant has not been  registered  under the Securities Act
of 1933, as amended (the "Act"),  or any applicable  state  securities laws, and
has  been  issued  to the  Holder  for  investment  and  not  with a view to the
distribution of either the Warrant or the Warrant  Shares.  Neither this Warrant
nor any of the Warrant  Shares or any other  security  issued or  issuable  upon
exercise of this Warrant may be sold,  transferred,  pledged or  hypothecated in
the absence of an  effective  registration  statement  under the Act relating to
such  security  or an  opinion  of  counsel  satisfactory  to the  Company  that
registration  is not required under the Act. Each  certificate  for the Warrant,
the Warrant  Shares and any other  security  issued or issuable upon exercise of
this Warrant shall  contain a legend on the face thereof,  in form and substance
satisfactory  to counsel for the  Company,  setting  forth the  restrictions  on
transfer contained in this Section.

             (b) The  Company  agrees to file a  registration  statement,  which
shall include the Warrant  Shares,  on Form S-3 or another  available  form (the
"Registration Statement"), pursuant to the Registration Rights Agreement between
the Company and the Holder dated as of August 29, 2002 (the "Registration Rights
Agreement").

          10. Notices.  Any notice or other communication  required or permitted
hereunder  shall be in writing and shall be delivered  personally,  telegraphed,
telexed,  sent by facsimile  transmission  or sent by  certified,  registered or
express mail,  postage  pre-paid.  Any such notice shall be deemed given when so
delivered personally,  telegraphed,  telexed or sent by facsimile  transmission,
or, if mailed,  two (2) days  after the date of  deposit  in the  United  States
mails, as follows:



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               (i)  if to the Company, to:

                    Xybernaut Corporation
                    12701 Fair Lakes Circle
                    Suite  550
                    Fairfax, Virginia  22033
                    Attn:  John F. Moynahan, Sr. Vice President
                    and Chief Financial Officer
                    Telephone No.: (703) 631-6925
                    Facsimile No.: (703) 631-3903

                    with a copy to:

                    Jenkens & Gilchrist Parker Chapin LLP
                    The Chrysler Building
                    405 Lexington Avenue
                    New York, New York  10174
                    Attn: Martin Eric Weisberg, Esq.
                    Telephone No.: (212) 704-6000
                    Facsimile No.: (212) 704-6288

               (ii) if to the Holder, to:

                    Rewell Holdings, Ltd.
                    Gretton House
                    P.O. Box 65
                    Duke Street
                    Grand Turk, Turks & Caicos Islands
                    British West Indies
                    Attention:  Ms. C.B. Williams
                    Telephone No.: ___________
                    Facsimile No.: ____________

                    with a copy to:

                    Krieger & Prager, LLP
                    39 Broadway, Suite 1440
                    New York, New York  10006
                    Attention:  Samuel Krieger, Esq.
                    Telephone No.:  (212) 363-2900
                    Facsimile No.:  (212) 363-2999

Any  party  may  be  notice  given  in accordance with this Section to the other
parties  designate  another address or person for receipt of notices hereunder.

          11. Supplements and Amendments;  Whole Agreement.  This Warrant may be
amended or  supplemented  only by an instrument in writing signed by the parties
hereto. This



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Warrant and the Purchase  Agreement,  of even date herewith,  by and between the
Company and the Holder contain the full understanding of the parties hereto with
respect  to  the   subject   matter   hereof  and   thereof  and  there  are  no
representations,  warranties,  agreements or understandings other than expressly
contained herein and therein.

          12.  Governing Law. This Warrant shall be deemed to be a contract made
under the laws of the State of New York and for all  purposes  shall be governed
by and  construed  in  accordance  with the  laws of such  State  applicable  to
contracts to be made and performed entirely within such State.

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

          14. Descriptive Headings. Descriptive headings of the several Sections
of this  Warrant  are  inserted  for  convenience  only and shall not control or
affect the meaning or construction of any of the provisions hereof.


                  [Remainder of Page Intentionally Left Blank]



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             IN WITNESS  WHEREOF,  the parties hereto have executed this Warrant
as of the 29th day of August 2002.


                                           XYBERNAUT CORPORATION


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



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                          NOTICE OF EXERCISE OF WARRANT

     The  undersigned   hereby   irrevocably   elects  to  exercise  the  right,
represented by the Warrant  Certificate No. W-A02-1 dated as of August 29, 2002,
to purchase  __________ shares of the Common Stock, par value $.01 per share, of
Xybernaut  Corporation and tenders herewith payment in accordance with Section 1
of said Common Stock Purchase Warrant.

     Please deliver the stock certificate to:

                               ---------------------------
                               ---------------------------
                               ---------------------------
                               ---------------------------
                               ---------------------------




Dated:______________________


                               [HOLDER]


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



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