Function: OBD2 mode: speed, voltage, water temperature, RPM, fuel consumption, single trip time, single trip distance, mileage, intake air temperature, oil temperature, oil pressure, turbo pressure, list, over speed alarm, RPM alarm, low voltage alarm, water temperature alarm GPS mode. GPS speed, compass, , longitude, altitude, GPS time, satellite number, position, voltage, over-speed alarm, low-voltage alarm Slope meter: roll angle, pitch angle Color: black Material: plastic Package Contents: 1 x Head-up Display 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.