MULTIFUNCTION GPS SPEEDOMETER: The car HUD displays speedometer, clock, number of satellites, direction of travel and other information in your driving view. You can safely view driving information without taking your eyes off the front OVERSPEED CAR ALARM: Additional instrumentation with speeding and fatigue driving alarms make your driving and more comfortable WITH COMPASS: Features a GPS navigation direction compass to help drivers by indicating directions. Equipped with a light sensor that adjusts its brightness according to different light, it is very clear in bright light SIMPLE INSTALLATION: Just mount the device near the dashboard or use the 360-degree rotating suction cup mount to mount the device to the windshield, USB cable link, plug and play WORKS FOR ALL VEHICLES: Compatible with all cars, truck, motorcycle, golf cart. Auto power on/off function, the HUD will start or turn off automatically with vehicle ignition, can effectively protect your vehicle's battery color:Black (green light) Material:plastic Package Contents: 1 x Car for cars Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.