SallyBest Omnibearing & Intelligent Parking Assistance System Contain Visual Digital LED Display Car Vehicle Parking Reverse Backup System for Car Safety with 8 Parking Sensors (Black) With 8 car parking sensor, protecting your vehicles and cars omnibearing. Alert you by three-step Bi-Bi sound with digital LED display. Display the distances and directions of the obstacles surrounding your vehicle on the colorful digital LED displayer. Two digitals for displaying the distance and the colorful stripe for displaying the direction. Easy to install and it's convenient for you.