Multi Functions GPS OBD2 HUD Gauge Digital Speedometer Projector On-board Computer Head Up Display Driving Turbo Speed AlarmMain Function: OBD2+GPS 2 in 1 dual working system,which canwork on all vehicles.This is a heads-up display for automobiles that can display and deliver various driving information to the driver through a high-definition LCD display.The OBDII type allows you to obtain detailed vehicle information and access information that is not normally available.By placing it on the dashboard, the amount of eye movement from the vehicle"'"s gauges is reduced, allowing the driver to relax and concentrate on driving more safely.The brightness of the display can be adjusted automatically so that it is always clear and beautiful. It is clearly visible on sunny or rainy days, or late at night and in tunnels.Please use this unit to make your car life more fulfilling!P21 OBD2 Gauge Support 10 languages: 1. English2. Simplified Chinese3. Traditional Chinese4. Japanese5. Korean6. Russian7. Arabic8. Spain9. German10. French P21OBD2 SystemGPS SystemDisplay Infomation vehicle speed(Km/h or MPH),engine RPM,water temperature(C or F),battery voltage,clock, fuel consumption,trip distance ,trip time ,ODO meter, clock,Kilometers per liter ,oil temperature, turbine pressure, air fuel ratio, intake pressure,gps satellite numbers, altitude,driving direction, speed up test, brake test , display detail fault code in text, and clear the fault code,and 48 professional date streamvehicle speed(Km/h or MPH),battery voltage,trip time,trip distance,clock,driving direction,altitude, gps satellite numbers Alarm Over speed alarm, RPM Alarm, Battery Voltage alarm,Water temperature alarm, error code Alarmbattery voltage alarm,over speed alarm Applied to Available for cars with OBD2 interfaceUniversalfor all cars,buses,trucks..Packing List1* device,1* OBD cable,1* USB cable,1* anti-slip mat1* English Manual1* device,1* OBD cable,1* USB cable,1* anti-slip mat1* English Manual FQA Area: 1.Does the interface displayonly in English? We have 10 languages that can be setand you can choose the language you are familiar with.2.Is the meter displayed in kmh? Km/h kilometers,MPH miles,you can switch settings.3.Can it check the time? Sure.Can be adjusted to your local time.4.What function do you need it? Speedometer,clock,voltmeterengine load,travel time,distance,altitude.5.Does the product have a total mileage counter or is the distance reset every time you start the engine? Synchronization of total mileage.6.How does gps work, do you need from the Internet? It works with GPS directly.7.What is the length of the main power cable? Standard 1.8 meters.8.Is it accurate the altitude that marks above sea level? Yes,according to satellite positioning.9.Can I turn off the ambient light if I dont want it? OFF turns off the ambient light,BLUE blue ambient light, REDred ambient light,PURPLE purple ambient light.10.Can itsee the time to accelerate 0-100km? Yes,sure.Accelerationto 100 kilometers refers to the acceleration time from 0 to 100km/hwhich is a power test of the car.