<ARTICLE> 5
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<EXCHANGE-RATE>                                      1
<CASH>                                         646,423
<SECURITIES>                                23,244,378
<RECEIVABLES>                                  288,656
<ALLOWANCES>                                    75,000
<INVENTORY>                                    644,342
<CURRENT-ASSETS>                            25,398,454
<PP&E>                                       3,722,832
<DEPRECIATION>                               1,579,705
<TOTAL-ASSETS>                              27,718,544
<CURRENT-LIABILITIES>                        1,726,916
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                    48,528,114
<OTHER-SE>                                (22,536,486)
<TOTAL-LIABILITY-AND-EQUITY>                27,718,544
<SALES>                                        547,302
<TOTAL-REVENUES>                               654,219
<CGS>                                        1,461,884
<TOTAL-COSTS>                                4,388,811
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                            (3,157,935)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (3,157,935)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (3,157,935)
<EPS-BASIC>                                     (0.25)
<EPS-DILUTED>                                   (0.25)