Feature; Automatically monitor the driving condition of the vehicle. The light intensity induced by the light source sensor is used to adjust the brightness of the screen. The free rotation is used, and its sensitivity is high. Using color high definition liquid crystal screen display, high resolution. Features and Further Details: 1.WORKS FOR ALL VEHICLES: Unlike other Car HUDs, you do not need to worry about the compatibly, T88 could work for ALL vehicles, no matter which brand or which model all over the world cause T88 is based on the GPS module inside. 2.Solar Powered: T88 HUD is equipped with a solar Panel, it can charge automatically under sunshine, and can also connect the device to car power supply with USB cable. 3.Rich Contents: Almost everything you may need to read during driving will be shown by this HUD, including vehicle speed, Clock, Altitude, km/h & mph, Car's ambient temperature,over speed alarm, fatigue driving alarm. A great partner for your driving. Mullifunction: T88 HUD has been upgraded with new functions which make it different and more competitive than the traditional HUD in the market. Because T88 is based on the GPS module and satellite, so it can be used to read car data information. A multi-functional tool to help you know about your car.The Device is GPS Digital Speedometer, and all data are collected from satellites. So if tested at home, perhaps speed and time can't display correctly. Please test it on the car outside with good signal. Specification:Power: DC 10V ~ 30V Voltage Accuracy: ± 0.5V Speed Accuracy: Less than 0.36Km/h Colour:black Material:ABS Package Include:1*Car HUD