VSYSTO Vehicle Backup Camera X7 Pro 4CH Truck Dash Cam 7" Monitor Super Infrared Night Vision Waterproof Truck Surveillance DVR Kits for Truck/RV/Trailer/Bus/Vans/Camper.10/20/20/49ft Extension Cable Color::X7 Features such as One Key

Features such as One Key Start/Landing

EASY to use

【IPX-4 WATER RESISTANT】It protects against splashing water from anywhere

but you need to hook the hook back

Antmoisture layer prevent mist dust

VSYSTO Vehicle Backup Camera X7 Pro 4CH Truck Dash Cam 7" Monitor Super Infrared Night Vision Waterproof Truck Surveillance DVR Kits for Truck/RV/Trailer/Bus/Vans/Camper.10/20/20/49ft Extension Cable Color::X7 Features such as One KeyX7 Upgrade Model 1) Reverse Function: Continuously Press the left button or right button twice to display the reverse screen. Backup function will make driver see all rear view. It is more safe. 2) Press the left button to display the left screen, then press the left button again to return to quad image ( right button is the same). if you want to see 2 image display,please use your remote controller. Wireless controller only support Reverse and Turn