Good-quality camera Special 300,000 pixels CMOS camera Night vision: 8 infrared LED lights supports night vision Photo resolution: 640 x 480 pixels, high recording resolution SD card: 4 to 32GB PIR detector Built-in passive IR (PIR) motion detector: the Q2 will begin to record video and audio if any motion detected by the PIR Video and audio recording automatically: if motion is detected by the PIR, the Q2 will auto begin recording video and audio for 30 seconds Long distance audio recording: built-in high-sensitivity microphone can record audio within 10 meters area Auto overwrite: when the memory is full, the Q2 will auto overwrite the SD card by delete the oldest video Back-up battery: built-in lithium battery can supports 100 minutes recording or 200 hours standby Plug-and-play USB port: connecting the Q2 with a computer via USB cable, the recording files of the Q2 can be replayed, copied or deleted with computer Supports operating systems: Supports DOS, Microsoft Windows, Linux and Mac OS X operating systems