Car Digital GPS Speedometer Head Up Display Overspeed MPH/KM Tired Warning Alarm Car GPS Speedometer Head Up Display Features: - SIMPLE & SAFE: Focused on the most important data: The speed, over speed alarm, driving direction, so that you can always keep your eyes on the road, NOT interfered by other gauge factors. - WELL PERFORMANCE : Car GPS Speedometer Head Up Display Provides digital speed just as you would expect from a digital speedometer at a very reasonable price. Car GPS Speedometer Head Up Display is nice having both analog and digital without having to buy a vehicle based upon the type of speedometer it has. - SIMPLE & EASY OPERATION: this Car GPS Speedometer Head Up Display was powered by car charger(Provided), Plug & Play, Car GPS Speedometer Head Up Display no professional installation required. - Auto power on/off : Car GPS Speedometer Head Up Display start and off with vehicle started and shutdown, Car GPS Speedometer Head Up Display effective protection of the car battery; retaining the manual switch mode, more easy to control HUD. - Car GPS Speedometer Head Up Display Automatic and manual brightness adjustment mode, driving without glare. - Car GPS Speedometer Head Up Display FULLY COMPATIBLE WITH all cars, vehicles & trucks. Car GPS Speedometer Head Up Display Specification: Type : Car GPS Speedometer Head Up Display Car GPS Speedometer Head Up Display Screen size : 3.5 inch Car GPS Speedometer Head Up Display Speed range : 0-400KM Car GPS Speedometer Head Up Display Work voltage : DC8-24V Car GPS Speedometer Head Up Display Working current : 40mA Car GPS Speedometer Head Up Display Compass precision : 1 Car GPS Speedometer Head Up Display 12V car charger : 1000mA Car GPS Speedometer Head Up Display Sleeping current : 15mA Car GPS Speedometer Head Up Display Size : 90x54x12 mm