<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5

<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   12-MOS                   12-MOS                   12-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1997             DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1996             JAN-01-1997             JAN-31-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1996             DEC-31-1997             DEC-31-1998             JUN-30-1999
<CASH>                                       1,213,000              10,294,000               2,635,000                 405,000
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                2,583,000               2,744,000               3,013,000                 955,000
<ALLOWANCES>                                         0                       0                       0                       0
<INVENTORY>                                  3,382,000               3,162,000               3,093,000               2,613,000
<CURRENT-ASSETS>                             7,832,000              16,381,000               8,977,000               5,625,000
<PP&E>                                      10,447,000              12,756,000              17,151,000              13,564,000
<DEPRECIATION>                               8,183,000               9,326,000              11,229,000               8,634,000
<TOTAL-ASSETS>                              10,728,000              20,059,000               5,922,000              10,650,000
<CURRENT-LIABILITIES>                        4,566,000               7,942,000               5,706,000               6,046,000
<BONDS>                                              0                       0                       0                       0
<PREFERRED-MANDATORY>                       12,465,000              25,425,000              32,793,000              32,793,000
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                         9,000                  10,000                  10,000                  10,000
<OTHER-SE>                                 (9,569,000)            (15,008,000)            (24,601,000)            (29,885,000)
<TOTAL-LIABILITY-AND-EQUITY>                10,728,000              20,059,000              14,955,000              10,650,000
<SALES>                                        201,000               1,733,000               2,386,000               2,762,000
<TOTAL-REVENUES>                               201,000               1,733,000               2,386,000               2,762,000
<CGS>                                          147,000               2,328,000               7,200,000               2,779,000
<TOTAL-COSTS>                                  147,000               2,328,000               7,200,000               2,779,000
<OTHER-EXPENSES>                             1,883,000               6,131,000               8,358,000               3,699,000
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                             423,000                 683,000                 473,000                 154,000
<INCOME-PRETAX>                            (2,239,000)             (7,352,000)            (12,415,000)             (3,845,000)
<INCOME-TAX>                                         0               (640,000)             (1,162,000)                       0
<INCOME-CONTINUING>                        (2,239,000)             (6,712,000)            (11,253,000)             (3,845,000)
<DISCONTINUED>                               (530,000)               1,342,000               1,724,000             (1,533,000)
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                               (2,769,000)             (5,370,000)             (9,529,000)             (5,378,000)
<EPS-BASIC>                                     (2.56)                  (5.66)                  (9.68)                  (5.42)
<EPS-DILUTED>                                   (2.56)                  (5.66)                  (9.68)                  (5.42)


</TABLE>