XIANQI Product Description: Quantity: 1pcs Color: black Head Up DisplayHUD short for Head Up Display. It displays driving data on the front windshield such as speed on the car front window glass; avoiding drivers unsafety because of watching the dash board while driving. 3.5 Inch HD Screen DisplayScreen 3.5 inch HD display, Multi-color design makes the screen more abundant and easier to read. Nano-technology to eliminate double reflections, clearer. Rich ContentsSpeed, Compass, Speed Alarm, Free Switch Between km and miles. Drivers can read the driving information instantly, and can always keep the best state on the way with HUD. Auto Power On/OffHUD start and off with vehicle started and shutdown, effective protection of the car battery; retaining the manual switch mode, easier to control HUD. Automatic and manual brightness adjustment mode, driving without glare.