Description: This M9 HUD is designed to reflect your vehicles computer information onto your windshield offering a safer drivingexperience day to day as well as more importantly at high speeds & during night driving. As it removes the needfor the driver to dip their head to view the instrument cluster. Installing this unit correctly will enable you to more effectivelymonitor your speed, this is helpful for novice drivers as well as experienced drivers in potentially avoiding speeding infringements. Feature:1. 5.5 large screen & high-definition display; Multi-color design makes the screen more abundant & easier to read 2. New function: Driving mileage measurement; The use of nano-technology to eliminate unwanted reflections & canmake display information more sharper 3. Automatic & manual brightness adjustment mode, driving without glare; Auto power on & off with vehicle startedand shutdown, effective protection of the car battery; while retaining the manual switch mode, & more beneficial to control HUD4. Display rich content: Speed, engine speed, water temperature, battery voltage, instantaneous fuel consumption, averagefuel consumption, mileage measurement, shift reminding, fatigue driving reminding, low voltage alarm, high temperature alarm, speed alarm, engine fault alarm, fault code elimination Package Included:1 X5.5 Inch M9 HUD