... Alarm by English speech 3. Left and right obstacle indication. Features & Functions:1, Compatible with any Car, Bus, Truck2, Automatic Detecting Obstacles ... Detective Angle Prevents Side Impact5, LCD Indicator shows Two Distances: Rear Left, Rear Right6, LCD Indicator: Ultra Brightness; Pasted on ... service: one year warrantyFull set photo:Gift box:Assemble: led parking sensor front 2 rear 2 sensors