Functions: 100 percent compatibility OBDandGPS dual system.OBD2 system: Function: vehicle speed, water temperature, voltage, fuelconsumption, RPM, clock, single driving time, driving distance(single or total), intake pressure, oil temperature, airtofuel ratio, turbopressure, altitude, driving direction, throttle, km per liter, intakeair temperature, transmission temperature, engine load, slope, tiltangle, acceleration test, brake test. Alarm: Overspeed Alarm, RPM Alarm, Water Temperature Alarm, Voltage Alarm, Tilt AlarmGPS satellite positioning, make sure you don"'"t go in the wrong direction. Perfect for traveling and driving adcentures.Obtain the current driving speed, with over speed alarm function, as well as display the local time.Realtotime voltage monitoring, can avoid safety hazards caused by too high or toolow voltage, prolonging the lifespan of the battery.With this headtoup display, you can clear the fault codes yourself without having to go to a repair store and pay for the repair.It allows you to understand your car more clearly without looking down atthe dashboard and adds a sense of technology to your car.Suitable for all vehicles, such as vans, trucks, buses, cars, offtoroad cars, SUVs, and other Vehicles. Specification: HUD Model: P2Material: ABSandPCSystem: OBDandGPS dual systemGPS system: Compatible with all cars.OBD system (cars that support standard OBD2 standard interface)Package Included: 1 x P2 HUD1 x Micro USB Cable1 x Nontoslip mat1 x OBD Cable1 x English Manual1 x fixed bracket Do drop