License Plate Frame with Color Rear View Camera Object Sensor Proximity Alert Distance Detection Back up Reverse Reversing Mount Backup Cam Square S SS-C71 Waterproof Mirror Image This high-quality rear view camera is designed and produced specifically for the purpose of being attached to the rear of a vehicle to aid in backing up. The built-in object detect sensors gives out 'Bi Bi' sounds for proximity alert, notifying you when the vehicle is too close to obstacles. This Rear View Camera features water-proof structure which provides good performance. It is the perfect solution to get rid of poor visibility on your car, boat, trailer, camper, truck, or any vehicle that has no rear-view mirror or poor rear vision.