The parking alerts the driver to be aware of the surrounding environment, preventing collisions. Installation is a breeze and it is compatible with various car models, making it convenient and quick to set up. The high-precision sensors ensure accurate distance detecting, providing reliable reverse assistance. Features -Color:Black -Material:Plastic -Size:10.00X2.50X2.00cm/3.93X0.98X0.79in -Size:10.00X6.00X1.80cm/3.93X2.36X0.71in -Size:2.90X1.80X1.80cm/1.14X0.71X0.71in -Power supply voltage: 12V -Power: 2 (W) -Detecting range: 0.4~2.5 meters -Working temperature: -30~70 ( degree centigrade) -Parking , with clear and easy-to-understand voice for parking assistance. -Comprehensive coverage with sensors to ensure no blind spots are left . -Stay alert and focused with the parking that alerts you to potential obstacles. -Quick installation for various car models, parking is reliable to use. -Parking , accurate distance detecting provided by high-precision sensors. Package list: 4 1 screen 1 x alarm