... , Bus, Truck2, Automatic Detecting Obstacles once Reversing Gear is Activated3, Digital Distance Display of Obstacles Buzzer: Built-in the Display4, Super ... -Wide Detective Angle Prevents Side Impact5, LCD Indicator shows Two Distances: Rear Left, Rear Right6, LCD Indicator: Ultra Brightness; Pasted ... : one year warrantyFull set photo:Gift box:Assemble: led parking sensor front 2 rear 2 sensors