Make driving easier with this 9 Inch HD Monitor with CCD Reversing Camera and Microphone Kit. The microphone is built in for easier communication. This system also comes with 3 trigger wires for cameras. Once a trigger wire is activated, for example, when the reverse gear is induced, it will show the rearview automatically. Or when the vehicle is put on the turn Right signal, the monitor will switch to the Right side camera automatically to give clear view on the right side of vehicle before making a turn. This HD Monitor with Reversing Camera is a must-have for your car!