Specifications Name Car Head Up Display Input Voltage DC 5VInput Current DC 50 120mAWorking Temperature 30 80℃ 22 176℉ Internal Battery NoDimensions 130mm x 72mm x 18mm 5 12 x 2 83 x 0 71 Weight 108g 3 81 oz Features Clear Head Up Display HUD The device projects the driving speed directly onto the windshield providing a clear and easily readable view without requiring the driver to look away from the road This enhances road safety by allowing constant monitoring of the speed Comprehensive Data Display Apart from showing driving speed this HUD calculates and displays the driving time mileage and altitude The local time is automatically adjusted according to the timezone ensuring you are always on schedule without manual resetting Overspeed and Fatigue Alarms Equipped with an over speed alarm and fatigue driving alarm this HUD helps in maintaining safe driving habits It alerts the driver when the vehicle exceeds the speed limit or if continuous driving time warrants a break promoting safety on long trips Easy InstallationUniversal Compatibility The HUD uses a plugplay system powered No professional installation is required and it is compatible with all cars and trucks using GPS signal guided calculation eliminating the need for wiring to the VSS Vehicle Speed Signal Adaptable DisplayEye Comfort Featuring a 5 5 large screen with green color data display this HUD auto adjusts its brightness through a sensor for both day and n