This system contains three parts: mini waterproof camera, 2.4GHz transmitter, 2.4GHz receiver. Fix camera in the back of car, connecting it to transmitter. Connect receiver to car LCD/GPS/DVD/device with bluetooth function , drivers can get full view of car back traffic condition just one glimpse. With its assist, drivers seem to get another eye , expanding their vision scope over modern dangerous superhighway. It suits for annoyed celebrity tracked by paparazzi as well as professional drivers.