Please Note:The OBD HUD not suit for all cars and is usually suitable for cars after 2008. OBD mode functions:Vehicle speed, speed, clock, water temperature, voltage, fuel consumption, single mileage, driving time, oil temperature, turbo pressure, engine load, number of satellites, altitude, azimuth, latitude and longitude, acceleration test, brake test, alarm: overspeed alarm, water temperature Alarm:voltage alarm, fatigue driving reminder, vehicle failure alarm GPS mode functions:vehicle speed, clock, voltage, single driving distance, driving time, number of satellites, altitude, azimuth, latitude and longitude Alarm: Overspeed alarm Voltage alarm Fatigue driving reminder Colour:black Material:ABS Package Contents: 1X F15 Main Unit 1X Rotary Suction Cup Holder 1X OBD Cable 1X Anti-Slip Pad 1X English instruction manual 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.