2015 New Universal 5.5" Large Screen Car HUD Head Up Display with OBD2 Interface Plug & Play A8 Car HUD Display Automatically adapt to the model,Plug and Play OBD II models KM and MPH free switch, greatly facilitate the imperial auto instrument Normal display mode,high-speed display mode,automatically display mode can be choosen Automatic and manual brightness adjustment,not dazzling Display of vehicle speed, engine speed, water temperature,consumption,average fuel consumption,driving mileage,low oil hint,engine failure