Hardware Parameters
1. Effective Image Range: 0.3 meters
2. Optical Image Range: 1.5 to 5 meters
3. Viewing Angle Range: Horizontal viewing angle >=65 degrees
4. Focus Mode: Auto Focus
5. Encoding Format: Support for MJPEG
6. Video Resolution: 1920*1080,1280*720 640*480 320*240
7. Video Frame Rate: 20~30 fps
8. Signal to Noise Ratio: >=39dB
9. Gain / Gain Control: Automatic
10. White Balance: Automatic
11. Exposure Control: Automatic

Microphone
1. Microphone Form: Built-in Microphone
2. Pickup Distance: Normal Speech within 4 meters
3. Signal to Noise Ratio: >=65dB
4. Audio Coding Format: Support PCM coding
5. Audio Bit Rate: 16K@16bit

External Interface
System Support: WINXP/7/8/10/mac os/Android

Work Performance
Interface: USB direct power supply, 5V