Universal Car GPS Speedometer - Head-Up Display with Speed, Overspeed Warning, Mileage Measurement, Fatigue Driving Reminder - Suitable for All Vehicles

Multi function display:Current speed,Mileage,Driving direction,Automatic sensitization,Sound alarm,Speed Alarm,Fatigue driving reminder,Driving speed(KM/h or MPH). 2 major alarm functions to improve driving safety,Speed Alarm and Fatigue driving reminder. Automatic photosensitive mode, automatically adjust brightness of display according to intensity of external light to make it clearly visible under strong light. GPS precise positioning / real-time synchronous data display, satellite data acquisition, not affected by weather. Automatic start- and shutdown with vehicle start- and shutdown.