DASHUHUWAI 2014 New W02 Car HUD Head Up Display 5.5"Size 12V Working Voltage With OBDII OBD 2 Interface KM/h & MPH Speeding Warning / Actisafety OBD Ii Car HUD Universal Car HUD Fuel Icon Head up Display LCD/ ew Design Multi Car HUD Vehicle-Mounted Head Up Display OBD II System Model Display of Vehicle Speed, Engine Speed, Water Temperature, Driving Mileage, Fuel Consumption, Rest Tips, Engine Failure This automotive head up display is abbreviated to HUD and short for head up display, with the meaning of "Look-up display device", or "look-at-the-front-horizontally display device". It can project important information (e.g. vehicle speed) onto the front windshield at the eye level of the driver and thus help to make their driving safe and sound when driving at a high speed, especially at night without lowering their heads. Plug and play, automatically adapt to the automobile models with OBD II (Bus Automatic Diagnostic System) interface. Comprehensive display, ie, vehicle speed, engine speed, water temperature, voltage, throttle valve position, ignition advance angle, time of 100km acceleration, fuel consumption, mileage, low fuel tips, engine failure, etc. Accurate large-screen(5.5'') digital speed also showed so that easy to read. Automatic power on and off saves energy. Alarm mode of single or four stages can be chosen as you wish. Remind driver to shift gear when necessary. Record cars driving over the maximum speed. Adjust the brightness mode automatically or manually so that the driving is not dazzling.