1.Display the optical image by a camera equipped behind your car 2.Display the distance of the rear obstacle on the LCD monitor. 3.The 3.5",6"&7"LCD monitor are clipped on the exist mirror;The 2.5'' LCD monitor are stand on the dash board.4.Parking sensor,auto-reversing detector 5.One video output,can be connected to car DVD/VCD6.It with cmos infrared camera,which need to drill hole on bumper; SB868L-4,with a licence infrared camera,SB868B-4-S35,with butterfly infrared camera,both of them installed on the licence of the car,no need to drill hole; 7.Alarm by three step Bi-Bi sound 8.Turn on/off the voice according to your desire9.Providing you with a more safe driving circumstance. 10.All kinds of sensor colors and styles are available