WUZHOU Parking Assist Sensor Car Parking Reverse Sensor Automobile Bumper Parking Distance Reverse Sensor for Easy InstallationThis parking sensor is very easy to install and move off but installation and maintenance by trained professionals are always highly recommended for safety reasons and for optimal function. User NoticePlease do not touch or press the center of sensor, which might damage the sensitivity and cause dysfunction. High Sensibility RadarWith advanced radar sensor technology, this sensor guide you in tight parking situations by audibly indicating when you are near an object, typically a parked car, and any other pedestrians and family members who happen to be around the moving vehicle. For Buick Chevrolet Cadillac Parking Radar Probe Colour: Black Size: 5CM*3CM Quantity delivered: 2 pieces Warm prompt: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products.