---Automatically engages as soon as you place your car into reverse.
---Show distance by multi-functional ultra-thin VFD display,Bi Bi voice warning.
---Support safe HUD (head up display) mode:rotate the display face to car windshield and choice HUD mode to      read the distance from windshield
---2~8 pieces different color sensors is available
---Easy installation
---Power(DC): +9~+16 V
---Operation temperature available: -35~+75 degrees

---Human speaking warning is optional

---Wireless version is optional:No need to run a wire from the front of the vehicle to the rear .