VideoSecu 4 Channel DVR USB 2.0 including 4 Video Infrared IR Day Night Security Cameras, 2 Pre-Amp Mini Hidden Microphones and 1 of 4 Channel Power Supply W48 Surveillance Security Setup DIY; 4 x Color Infrared illuminated IR CMOS Cameras; Real time remote monitoring. Alarm notification by e-mail; Dynamic IP acceptable; Internet security remote control MPEG 4 Image Compression Format; Support different multi-channel display modes, full screen display and auto dwell display Advanced search mode. Users can search by date/time, camera, record mode, and random combination of the three methods Powerful video playing back functions, including playing back, pause, stop, fast-forward, single-frame play and image capture You need provide your own PC, monitor and extension cable.