Nebublu Head-Up Display GPS Speedometer, Digital Dual System Screen, Speed/Time/Direction, Vehicle Overspeed Alarm

Clear display, no glare when driving.. Automatic light adjustment: It can adjust its own brightness according to environment. 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 0-250KM/H. Two Alarm functions: It supports overspeed alarm and fatigue driving alarm. No matter where it is placed, it is clear and natural, and dose not block any sight. Compact Design: compact body suitable for placement. Display Function: This head display can diplay speed, clock, driving time, driving distance, number of satellite, driving direction. refresh rate is 10 frames per second, and speed of car changes smoothly and continuously. It is matching with all vehicles around world. excellent Compatibility: This head display is GPS + Beido dual-mode chip