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, turbine pressure, 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, 100 km acceleration test.  High-performance processing chip, powerful performance and compatibility, dual system, dual-run memory and dual-core processor ensure smooth operation at high speed.  Equipped with a complimentary 360 degree flexible rotating suction cup bracket.  Exquisite design: High-definition display lens, not affected by external light.  OBD+GPS dual mode is applicable to all models. Plug and play, easy to operate.   Specifications: Model: P20 OBD+GPS Dual System;  Color: Black;  Screen size: 3 Inch;  Product size: 115x35x75mm;  Package size: 13.3x9x11cm;  Package weight: 360g;   Package List: 1 x HUD Main Unit;  1 x OBD Cable;  1 x User Manual;  1 x Suction cup bracket;  1 x USB cable;  1 x Double-sided adhesive tape