Features: brand new and high quality OBD+GPS dual system. Two installation methods, A pillar installation + center console installation. There will be no stall delay phenomenon. Four major alarm modes improve driving safety: overspeed alarm, low voltage alarm, water temperature alarm, and speed alarm. The GPS function can be displayed at the same for time in the OBD mode. 8 kinds of display screens can be switched. Function: OBD2 mode: speed, rpm, water temperature, voltage, fuel consumption, clock, single travel distance, single travel for time, oil temperature, for turbine pressure, acceleration test, brake test, overspeed alarm, engine failure alarm, elimination of fault code , water temperature alarm, speed alarm, voltage alarm, mile switch, fatigue driving reminder, automatic and manual brightness adjustment. GPS mode: speed per hour, altitude, number of satellites, clock, mileage of per trip, for time of per trip, compass. Specifications: Material: ABS Color:Black Size:Approx.4.9x6.1cm/1.93x2.4inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Host 1x OBD Cable 1x Hook and Loop 1x Manual