There are multi colors to choose, function is totally the same, just different in sensors color. Specifications: Features:- The host and display is a wireless link- Wireless connection between control box and display- Numeral and color LED display- LED display which shows distance to obstacles with 100% accuracy.- It is equipped with a LED display and 4 parking sensors.- Alarm by three-step Bibi sound.- Left and right obstacle indication- Numeral display from 2.0m to 0m- Your car can be protected from bumps and expensive collisions.- This parking sensor system helps take the risk out of reversing and parking.- Convenient and easy to install.- Voice engaged or shut at your will. Display: LED screen Number of sensor: 4 Detecting Distance: 0.3-2.0m Alert:- Beeping: BI BI BI- Buzzer Volume: About 65db- Ultrasonic Frequency: 40KHz Max Consumption: 2W Voltage: 9-15V Rated Current: 50mA-180mA Sensor: - Type: Concave head- Diameter: 22mm