OBD2 system: Speed, clock, engine RPM, water temperature, voltage,fuel consumption, oil temperature, turbo pressure, Gear Temperature ,Fuel level,Outside Temperature,Engine Load,Exhaust Gas Temperature,FuelRail Pressure,Oil Pressure ,single driving distance and time, clear fault code, brake test, accelerator test, data streams, speed alarm, low voltage alarm, high water temperature alarm, fatigue driving alarm, KM/MPH can be free switched,the display interface can be free. switched. GPS system: speed, Clock, voltage, Compass, Altitude,satellite number,single driving distance and time,speed alarm, low voltage alarm,