Flexzion Car Head Up Display 5.5" Universal HUD Vehicle-Mounted Projector with OBD2, EUOBD Interface Plug Play Engine Speed, Water Temperature, KM/h MPH Speeding Warning Fuel Speedometers A8 Comprehensive display, HUD can display many parameters at the same time,as follows, vehicle speed, driving direction, driving mileage measurement, driving time, driving distance, real time, satellite number, altitude, speed alarm, free switching between kilometer and mile 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 Automatic and manual brightness adjustment mode, driving without glare.Automatic and manual brightness adjustment mode, driving without glare;Auto power on and off with vehicle started and shutdown, effective protection of the car battery; while retaining the manual switch mode, and more beneficial to control HUD 5.5" screen and high-definition display; Automatic adaptation car models, and can apply for cars in line with OBD II or EUOBD. Alerts you if you exceed the speed limit by setting over-speed buzzing alarm; Displays precise local time and altitude in accordance with the satellite