Specification: Brand new Size: approx. 109*86*75mm/4.29*3.39*2.95" OBD+GPS dual system, GPS function can be displayed in OBD mode. At present, the first HUD with alarm ambient light (the ambient light is normally blue, and flashes red when the alarm occurs). There are three units of turbine pressure: PSI, 100KPA, and bar. The turbine value can be adjusted and calibrated to increase the fuel consumption unit KM/L. Up to 10 Hz refresh rate, no stuttering delay phenomenon. When the speed is switched to MPH, the water temperature will automatically switch to Fahrenheit, the single driving distance will automatically switch to Miles, and the fuel consumption will automa Fine workmanship and good performance. Easy to install and use. Long service life. Function: OBD2 Mode: speed, RPM, water temperature, voltage, fuel consumption, clock, single travel distance, single travel time, oil temperature, turbine pressure, acceleration test, brake test, overspeed alarm, engine failure alarm, fault code elimination, water temperature alarm, speed alarm, voltage alarm, mile/km switch, fatigue driving reminder, automatic and manual brightness adjustment, can display more than 100 data streams GPS Mode: speed, altitude, number of satellites, clock, single driving distance, single driving time, compass Package Included: 1pc x HUD 1pc x OBD2 Cable 1pc x Sticker 1pc x English Manual Note: GS mode is suitable for all cars, OBD2 mode is suitable for cars with OBD2 protocol. Please allow 0-1cm size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.