A. It is suitable for most cars, trucks, motorcycles and bicycles. B. Speedometer: - Thanks to the enhanced GPS module, this head - up display (HUD) can relatively quickly obtain the actual vehicle speed from satellites. - This instrument has features like relatively high accuracy, relatively fast positioning and a relatively short startup time. C. It can display speed in miles per hour or kilometers per hour, which can be switched through simple button operations. And thanks to the equipped sensor, it can achieve automatic brightness adjustment, being suitable for both day and night driving and compatible with most cars and trucks. D. It uses GPS signals, so no wiring is required for the vehicle speed signal (VSS). E. It displays the vehicle's driving speed, and the speed is shown in green, which is pleasing to the eye.