Features: OBD Mode Display: vehicle speed, rotate speed, water temperature, voltage, driving distance, driving time, fuel consumption, local time, oil temperature, driving direction, number of satellites, air fuel ratio, intake pressure, acceleration test, brake test, acceleration test, and read the whole vehicle data stream.  Alarm: overspeed alarm, rotate speed alarm, fatigue driving alert, high water temperature alarm, low voltage alarm, engine fault alarm.  GPS Mode Display: speed, voltage, mileage, driving time, local time, altitude, driving direction, number of satellites, acceleration test, brake test.  HD display screen, multiple UI can switch different pictures, the color of numbers on the interface can be freely adjusted.  Exquisite and unique design, brightness automatically adjusted with light. Plug and play, easy to operate.  HUD can eliminate the fault code displayed on the engine dashboard.  OBD+GPS dual mode is applicable to all models.   Specifications: Model: P11;  Color: Black;  System: OBDⅡ+GPS;  Screen size: 1.8inch;  Environmental temperature: -40℃—+120℃;  Atmospheric pressure: 86—106KPa;  Relative humidity: 10%—95%;  Environmental noise: <=60dB（A）;  Alarm sound level: 》=30dB(A);  Product size: 65.5x65x65mm;  Package size: 14.5x10x7.5cm;  Package weight: 260g;   Package List: 1 x HUD Main Unit;  1 x OBD Cable;  1 x USB cable;  1 x User Manual;  1 x Non-slip Mat