1. Two video inputs, if there is no signal input, the screen will be black, and the reverse display will be given priority 2. It can be connected to the reversing system. When reversing, the signal of the display will automatically wake up, and the image of the display behind the car will automatically turn off after reversing. The installation is simple and convenient Type:TFT-LCD Power:about 3W Power supply:DC=9V-30V Video:one rear view input for reversing, one DVD video input System:PAL/NTSC dual system automatic switching Contrast Ratio:350:1 Brightness:300cd/m2 Number of pixels:480xRGBx272 Colour:Black Material:Plastic Size:Display size:4.3 inches Package Contents: 1 * mirror display Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.