Technical parameter Unit N.W.:65.7g Image Sensor:1/3 CMOS VGA sensor Image Resolution: 640*480,600*800 Image Format:PAL/NTSC,adjusted by?the software Color:RGB24(True Color:24bit),I420 Qutput:USB1.1 Video:CIF,30frame/second;VGA:10'15frfame/second Brightness:2.5Lux S/N:>48dB Lens:F2.2/F6.85 Focus Length:30mm???ިManual) Visual Field:55Degree Display:Brightness,.Contrast Ratio,Saturation Degree,and Sharpness White Balance: Auto,Manual Exposure:Auto,Manual Sto9rage Temperature:-20??60Degree Working Temperature:-15??40 Degree System Requirement Windows98/2000/ME/XP Pentium 200MHz CPU or above EMS Memory 32MB(64MB Recommended) Display Adaptor:Minimum 4MB(24bit) CD-ROM Driver USB PORT