WYING A3 Hud GPS Heads Up Display Digital Speed Mileage Automatic Speed Report Projector Fits All Cars HUD short for Head Up Display.It displays driving datas on the front windshield such as speedon the car front window glass;avoiding drivers unsafety because of watching the instrument while driving.Drivers can read the driving information instantly ,and can always keep the best state on the way with HUD.Accessories1: A3 HUD 2: USB cable 3: Non-slip mat 4: Reflective film 5:boxHUD main functionMain features of HUD1. Adapt to any model, easy installation, plug and play 2.3.5 inch HD display 3. Multi-color screen design makes the picture richer and easier to read 4. Using nanotechnology to eliminate redundant reflections, the picture is clearer. 5. Rich display content: driving speed, driving direction, driving time, driving kilometers, time display, number of satellites, altitude, speeding alarm, free switching between kilometers and miles 6. Automatic switch, start with the car, shut down with the vehicle, effectively protect the car battery; at the same time, the manual switch mode is retained, which is more beneficial to control the HUD 7. Automatic and manual brightness adjustment mode, driving is not dazzling universal for all cars Head Up Dispaly Multiple interface one-key switch---1:car speed---2:Instant voltage ---3:driving direction ---4: Satellillite time ---5: Driven distance ---6: Altitude Main window function description1: Driving distance unit ( m) 2: Clock, driving distance,driving time 3: Driving distance unit(KM) 4: Icon for satellite signal: the light flashes when HUD searching for the satellite signal 5: Speed,voltage 6: Speed Km/h 7: Speed MPH 8: Voltage V 9: Driving directions:west,north,east,south 10: Buzzer icon 11: light-sensor Light SensorSet the brightness of the viewfinder according to the intensity of the outside light so that it is clearly visible in bright light. New additionsMileage measurement Driving time calculation Reject the trafficHUD Real-time reading of satellite data the latest update of GPS chip Colorful HD displayNano-technology to eliminate double reflections,more clear. product feature----1.Compass Humanized azimuth compass, accurate to single digit latitude and longitude ----2.Clock function Real-time view of traffic safety vents ----3.Car satellite The satellite Altitude collection from satellite,making high accurate positioning protecting from weather or other natural influence Professional solution design makes performance more powerfulHigh performance processing chip, powerful performance and compatibility, dual in-machine training and dual core processor, ensure smooth operationProduct accessories1*HUD unit1*Non-slip mat 1*Car charge cable1*Reflective film 1*User manual Display effect Patented certificate certification