Car Digital GPS Speedometer Head Up Display Overspeed MPH/KM Tired Warning AlarmCar 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 DisplayCar GPS Speedometer Head Up Display Screen size : 3.5 inchCar GPS Speedometer Head Up Display Speed range : 0-400KMCar GPS Speedometer Head Up Display Work voltage : DC8-24VCar GPS Speedometer Head Up Display Working current : 40mACar GPS Speedometer Head Up Display Compass precision : 1Car GPS Speedometer Head Up Display 12V car charger : 1000mACar GPS Speedometer Head Up Display Sleeping current : 15mACar GPS Speedometer Head Up Display Size : 90x54x12 mmPackage Includes:1 x Car GPS Speedometer Head Up Display1 x Car Charger Wire1 x User Manual