Car Head-Up Display (HUD) - Digital Speedometer with Driving Mileage Display, Compass Angle, Overspeed Alarm, and Fatigue Driving Alarm

Plug and play: Use USB cable to collect lighter.. Display Function: This head display can diplay speed, driving mileage, compass angle, satellite icon. GPS Compass: It can dispay all directions, E(East), W(West), S(South), N(North). fatigue driving alarm setting is 1 to 8 hours, head display will give fatigue driving alarm when your continuous driving time reach to setting value. Head display will alarm when vehicle speed reach to setting value. over speed alarm setting is 30-250KM/H. Two Alarm functions: It supports overspeed alarm and fatigue driving alarm. refresh rate is 10 frames per second, and speed of car changes smoothly and continuously. It is suitable with all vehicles around world. top-notch Compatibility: This head display is GPS + Beido dual-mode chip