Product model: W43 Operating voltage: 12 volts, Installation position: rear Screen type: LED display, Sound type: BIBI sound, Sound switch: None, Switch function: None, Screen wire length: 2.2m, Rear sensor wire length: 2.3 meters, Products include: car charger, display *1, sensor *4, controller *1, double-sided tape *2, power cord *1, drill *1, packaging *1, Single weight: 340G/ set, Single package size: 178*130*45MM Packing quantity: 50 sets/box, Carton size: 67*25*37.5CM(A50#)