1、[HD Multiple Channel Surveillance] 1080P 4 channel camera, truck backup camera comes with a 7 inch AHD display, which shows you the environment in all directions and makes driving safer. 2、[High Definition] The backup camera supports AHD1080P N, AHD 720P N, CVBS mixed input, high definition, no matter day or night, it can provide a clear view, so you can be more certain in driving. 3、[Powerful Function] Support 4 channel synchronized online video playback, pause, fast forward, fast backward, etc. Support video file lock function, the locked file will not be overwritten and deleted, so that you can be more relaxed while driving. 4、[Auxiliary Line Function] You can set and adjust the auxiliary line independently, when encountering obstacles, the driver can adjust the auxiliary line according to the width of the vehicle to decide whether the car can pass through the obstacles smoothly, so as to make backing up, parking and so on safer. 5、[Independent Adjustment Of Picture Quality] Truck rearview camera, video source brightness, contrast, saturation, color, sharpness can be adjusted independently, easy to create the most suitable display for you.