Note:*OBD System Only Compatible With Petrol Car ,Not compatible With Diesel Car Electric Car hybrid vehicle.*OBD+GPS Two Chipsets, Dual Working Mode, Can Work on All Petrol Vehicles:*Default working mode is OBD. If your car doesn't have obd port or obd2 is not compatible, pls go to ''set'' and off OBD, it will switch GPS. GPS will work on all vehicles.Functions:1. OBD mode information display: vehicle speed, slope meter,water temperature, voltage, fuel consumption, RPM, single travel mileage, single travel time, system time, intake preure, oil temperature, gearbox oil / transmiion Temperature, air-fuel ratio, turbo preure, intake preure, acceleration test, brake test, read data stream...Alarm: Over-speed alarm, Speed alarm, High water temperature alarm, Low voltage alarm, Engine fault alarm, Clear fault code, Free switching between kilometer and miles,KM/h & MPH Switch freely,C & switch freely.2. GPS mode information display: speed, travel time, satellite time, altitude, number of satellites, driving direction, single mileage, voltage, acceleration test, brake test.Alarm: Over-speed alarm, Low voltage alarm, Water Temperature Alarm,Free switching between kilometers and miles.Product Highlights:1.-OBD + GPS dual system, can work on all cars.If You Car OBD2 Protocol is Not Open, You Can Choose GPS Working System, GPS is Compatible with All Cars2. -Two installation methods:1) stand on dashboard, 2) upside down on windshield3. -The bracket can be rotated in 360 degree to adjust the visual angle and height.4. -Speed Unit KM/H & MPH Switch freely;5. -Turbine preure: PSI and KPA switch freely.6. -Fuel consumption units: KM/L and L/100KM, L/H;Engine is on but Stationary (Speed is at 0): show instant fuel consumption, unit is L/H.When car is in motion, the interface will automatically change into KM/L or L/100KM as your setting;7.-The first HUD to show all data of OBD+GPS dual mode, no need to switch working system if OBD2 protocol is compatible.8.-Add AMBIENT LIGHT:the default color is in BlueWhen there is an alarm,change to red and flashing (remains the brightest) to Remind the driver.9.-Modern design and high quality: New tooling design, driver can see the clock (right corner) all the time.10.-12 kinds of different interface, you can choose any display interface you prefer.11. 2 versions of different languages are available now: English, Chinese the default version is in English (please choose the version you need):12. Support Update Software Remotely (Optional): Latest software updated in Jan, 202213.-Accept OEM & ODM Orders: Add Start-up Screen with your logo; Customize Package; Add new functions and display interfaces... Choose Your Preferred 12 style differents display interfaces About Our Company We are a profeional Beauty and Healthy supplier.We provide the high-quality goods and good services, you can buy confidence in my store. If there is any question,please