Totally self contained with invisible IR Illuminators and 550 LOR Color/B&W Sony CCD camera. .Brilliant color video by day-B&W 0.0 Lux at night. With our exclusive copyrighted micro PIR motion activation system; there is virtually no battery drain while on standby, and no false alarms. As soon as "body heat" is detected, up to 20 feet away, full resolution D1 (720 X 480) @30fps video is recorded on a hidden SD card. Included remote control allows for playback from unit and parameter adjustmemts’ Recording continues until 1 minute after motion ceases, then unit automatically returns to standby mode. Rechargeable high capacity Li-ion battery offers 1 year of standby operation and over 20 hours of actual recording per charge. Recordings can be played back to TV/VCR directly from unit, or SD card can be removed and played on your PC.