Features: OBD2 mode: speed, rotation speed, 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 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