... function when reversing Show Distance,Buzzer Alarm 3.5 inch Mirror Parking Sensor system with camera LD05-BB-4* Super slim Car ... Rearview Mirror,3.5 inch TFT Monitor,clip into the original rearview mirror.2 way video input,1 way video output ... . Superposition function characters, figures showed that the distance barrier, 10 around obstructions simulated show the direction of article, Bi, Bi ...