EASY WIRING: PLUG AND PLAY. Wiring via 4 pin connector, connector with waterproof rubber ring. Wired car camera system can get more stable video than wireless system when driving fastUSBIt supports to backup videos via USB slot. It can also connect a mouse via the USB slot. LOOP RECORD: 4-CH 720P (1080P/960H/D1 for selection) real time record. Records camera feeds continuously, looping over oldest recordings when storage is full. Records onto one memory card - with 256GB capacity. (CARD NOT INCLUDED).PLEASE DO NOT USE MICRO SD CARD, PLEASE USE BIG SD CARDPLAYBACKSupport playback videos on screen. Support video searching function so that we can easily get files of a certain period. We also provide a free software, used to palyback recording files on Windows PC. EXCELLENT CAMERA: PLEASE CHECK THE PICTURE FOR THE SIZE OF THE CAR CAMERA. IP68 Rate waterproof, can work in outside directly. 18 pieces IR LED for night vision. Full metal case material, Real 2.0MP res