Mesinton 2V 170&deg; Mini Color CCD Reverse Backup Car Front Rear View Camera Night Vision Waterproof grade: IP67, Signal System: NTSC / PAL Applicable to variety of Vehicles: car, truck, RV, mini-van etc Function:By default there are ruler line,12V170  Mini Color COMS reverse back up in front of the car rear view camera night vision, waterproof COMS Car reversing camera dedicated HD 170 degrees, waterproofApplicable to variety of vehicles: car, truck, RV, etcit is easy to install. Do by yourselft, save your money