OBD & GPS (Dual Working Systems), Works on All Vehicles.(Diesel, Gasoline, Hybrid, Trucks and Motor cars and so on) Product Features: 1. OBD mode information display: vehicle speed, water temperature, voltage, fuel consumption, RPM, one-way mileage, one-way time, system time, oil temperature, air-fuel ratio, turbo preure, intake preure, acceleration test, brake test, read data streamclear fault code, free switch between kilometers and mileage, free switch between KM/h, MPH, free switch between C and F. Alarm: Overspeed alarm, overspeed alarm, high water temperature alarm, low voltage alarm, engine failure alarmfatigue driving reminder 2. GPS mode information display: speed, travel time, satellite time, altitude, number of satellites, driving direction, single mileage, voltage, acceleration test, brake test, and switch between kilometers and miles freely. Alarm: overspeed alarm, low voltage alarm, fatigue driving reminder 3. incline meterDisplay the inclination of the car, and alarm if there is a risk of rollover Attention: In OBD mode, display OBD function + GPS function + incline meter In GPS mode, display GPS function + incline meter 10 alarm functionsImprove driving safety 12 major interfaces Clear picture and smooth refresh The new ambient light makes the whole picture more beautiful There are 7 colors to choose from and can be turned off manually Built-in GPS chip, can display altitude, time, latitude and longitude, compa. meet driving needs Inclinometer Too high an angle will sound an alarm to warn you of the danger of a rollover. OBD2+GPS Dual system The communication protocol is based on the J1939 protocol standard, and the CAN communication is more stable. Faster protocol matching, faster data refresh Read the whole vehicle ECU data Let you know the condition of the car car performance test More than just an OBD2 mater 360 rotating bracketEasy to adjust the viewing angle and height Automatic photosensitive,clear day and night Attention: If the car does not have OBD2 protocol or OBD2 protocol is not compatible, please enter "Settings", close OBD, it will switch to GPS working mode. OBD2 working mode is not compatible with following car (please switch GPS mode): 1. OBD mode almost 80% of cars before 2008 can't work properly 2. The OBD mode cannot work normally on most gasoline-electric hybrid vehicles (hybrid vehicles), Pickup, and Mini Bus... Nor can it be used in some old diesel powered cars, SUVs, ORVs... 3. Few special vehicles If you are not sure, please