Car Head-up Display Digital Speedometer Display Driving Mileage, Compass Angle, Overspeed and Fatigue Driving

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