Main Features: 1) CMOS image sensor with 480K/1.3 Mega 2) Built-in microphone 3) Night vision function 4) USB 1.1/2.0 interface 5) Optional Mic function 6) Automatic white balance 7) Automatic exposure 8) Output format: RGB 24 or I420 9) S/N ratio: >48dB 10) Focus range: 3cm - infinity 11) System requirements: Windows 98 / 2000 / ME / XP / 2003/Vista