<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FINANCIAL STATEMENTS FOR THE THREE AND SIX MONTHS ENDED JUNE 30,2000
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000             DEC-31-1999
<PERIOD-START>                             JAN-01-2000             JAN-01-1999
<PERIOD-END>                               JUN-30-2000             JUN-30-1999
<CASH>                                           4,982                   2,894
<SECURITIES>                                         0                   3,995
<RECEIVABLES>                                      441                     712
<ALLOWANCES>                                     (116)                    (41)
<INVENTORY>                                      1,734                   1,705
<CURRENT-ASSETS>                                 7,343                   9,622
<PP&E>                                           5,750                   5,538
<DEPRECIATION>                                 (3,595)                 (2,685)
<TOTAL-ASSETS>                                  10,141                  12,911
<CURRENT-LIABILITIES>                            3,958                   3,824
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                        71,337                  60,310
<OTHER-SE>                                    (66,504)                (53,770)
<TOTAL-LIABILITY-AND-EQUITY>                    10,141                  12,911
<SALES>                                          1,414                   1,631
<TOTAL-REVENUES>                                 1,414                   1,631
<CGS>                                            1,522                   1,253
<TOTAL-COSTS>                                    1,522                   1,253
<OTHER-EXPENSES>                                 5,565                   7,101
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               (214)                   (271)
<INCOME-PRETAX>                                (5,744)                 (6,811)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                                  0                       0
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                   (5,744)                 (6,811)
<EPS-BASIC>                                     (0.29)                  (0.45)
<EPS-DILUTED>                                   (0.29)                  (0.45)


</TABLE>