<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS AND RELATED NOTES FOR THE SIX MONTHS ENDED JUNE 30, 1998
AND THE YEAR ENDED DECEMBER 31, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                                                  
<PERIOD-TYPE>                   6-MOS                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               JUN-30-1998             DEC-31-1997
<CASH>                                           3,805                   5,395
<SECURITIES>                                     2,984                   4,890
<RECEIVABLES>                                    3,142                   1,626
<ALLOWANCES>                                        38                      29
<INVENTORY>                                      1,770                   1,424
<CURRENT-ASSETS>                                11,990                  13,667
<PP&E>                                           2,736                   2,149
<DEPRECIATION>                                   1,676                     804
<TOTAL-ASSETS>                                  13,894                  15,168
<CURRENT-LIABILITIES>                            2,552                   2,601
<BONDS>                                            411                     354
<PREFERRED-MANDATORY>                           44,673                  38,871
<PREFERRED>                                      1,567                   1,567
<COMMON>                                             0                       0
<OTHER-SE>                                    (35,904)                (28,011)
<TOTAL-LIABILITY-AND-EQUITY>                    13,894                  15,168
<SALES>                                          4,095                   6,221
<TOTAL-REVENUES>                                 4,513                   6,221
<CGS>                                            2,382                   3,228
<TOTAL-COSTS>                                    2,403                   3,228
<OTHER-EXPENSES>                                 9,121                  12,344
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                  23                      61
<INCOME-PRETAX>                                (6,800)                 (9,156)
<INCOME-TAX>                                         1                       1
<INCOME-CONTINUING>                                  0                       0
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                   (6,801)                 (9,157)
<EPS-PRIMARY>                                  (36.65)                 (59.36)
<EPS-DILUTED>                                  (36.65)                 (59.36)