Walmeck Car 3.5 inch Head-up Display Windshield Projecter Digital Vehicle Speedometer GPS Model Overspeed Warning Fatigue Driving Alarm

Driving: The head up display holder shows enough information directly to you; which allowing you to maintain constant focus on the traffic; with no extra distraction. Letting you see the navigation instructions clearly without lowering your head Great Compatibility: This HUD is GPS + Beido dual-mode chip. It is compatible with all vehicles around the world. The refresh rate is 10 frames per second; and the speed of the car changes smoothly and continuously. Simple Function: Simple design; minus complicated functions. This HUD can diplay speed; driving direction and the number of satellites. Two Alarm functions: It supports overspeed alarm and fatigue driving alarm. The over speed alarm setting is 30-250KM/H. HUD will alarm when the vehicle speed reach to the setting value. The fatigue driving alarm setting is 1 to 8 hours; HUD will give fatigue driving alarm when your continuous driving time reach to the setting value. Compass: N (North) E (East) W (West) S (South); After the satellite is found; the GPS light stops flashing and stays on for normal use.