OBD2 mode function:Vehicle speed, RPM, water temperature, voltage, fuel consumption, time, average fuel consumption, single driving time, single driving mileage, total mileage accumulation, driving direction, and longitude, Alarm:overspeed alarm, speed alarm, water temperature alarm, voltage alarm, turbine pressure alarm, transmission oil temperature alarm, oil temperature alarm, oil pressure alarm, slope tilt alarm, fatigue driving reminder, vehicle fault alarm GPS mode functions:vehicle speed, voltage, time, single driving time, single driving mileage, total mileage accumulation, driving direction, and longitude, number of satellites, altitude, accelerometer G value, up and down slope angle, left and right tilt angle, acceleration test, brake test OBD plus GPS dual systemInclinometer + Accelerometer + Ambient light Suitable with all car Colour:As Shown Material:ABS+PC Package Contents: 1 x Car Digital Speedometer 1 x OBD cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.