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.