ACECAR Upgrade T800 Universal Car HUD Head Up Display Digital GPS Speedometer with Compass Driving Latitude and Longitude Speedup Test Brake Test Overspeed Alarm HD LCD Display for All Vehicle

It's a very good reminder,and will improve the safety of drivingBecause It will rise beep beep voice for couple seconds when over the speed that you had set (default speed: 150km/h) Description:Color:muti-color ,can be switched freely Material:ABS+PC Display size:4.3InchProduct size:107x57x20 mm Packing:Box packing Packaging Size:14.6x 8.8x 4.8 cmPackage included: 1*HUD host 1*User Manual1* car charger cable 1*Double-sided tape ATTENTION:1. Speed data display error: Because the system is designed to warn drivers not to overspeed. Therefore, the HUD's default display speed is 5-10 km/h higher than the actual driving speed of the car. You can adjust the data to be synchronized when using. There is no need to adjust again in the future. 2.Sleep Voltage: Default is off ,if the device can’t auto off,please adjust the voltage at 13.2V or higher What's the Difference Between GPS and OBDII? 1. GPS works for all vehicles, but it doesn't show as much data as OBDII. 2. OBDII has more powerful features and data, but i...