KKmoon 5.5 Inches Plug & Play OBD2 Auto Car Windshield HUD Head Up Display KM/h & MPH Information Display Modules Automatic adaptation car models, and can apply for cars in line with OBD II or EUOBD (onboard automatic diagnostic system).Plug and Play. 5.5? large screen and high-definition display. Multi-color design makes the screen more abundant and easier to read. The use of nano-technology to eliminate unwanted reflections and can make display information more sharper. New function:driving mileage measurement.