1.Three Color Mini LED Display.               
2.Natural human voice+Buzzer Type.                                   
3.Dual CPU, 4 sensors system. 4.Obstacle orientation indication. 
5.Operating voltage rating: DC12V.
6.Max power: Pmax<5W.
7.Operating temperature: -40℃~80℃.
8.Display Distance: 0.3m~2.0m.
9.Alarm Distance: 0.3m~1.5m.                
10.Alarm voice: >80dB.
11.Ultrasonic frequency: 40KHz.             
12.One year warranty.