[Design concept]The screen design of M1 is very simple, and the data projected on the windshield should not be too complicated, otherwise it will block the driver's sight. So we designed it as a very simple speedometer, presenting only the important speed data in front of the driver's eyes, which is clear and simple at a .[Main Functions]M1 displays speed, has overspeed alarm and fatigue warning functions, and GPS compass displays direction. Speed is available in MPH and KM/H units, adjustable in settings. When speeding or continuous driving time is too long, the product will beep to remind the driver, just like a safety supervisor, always reminding the driver to pay attention to driving safety, placing a mini M1 HUD in the car will definitely a lot of .[Automatic HUD 1]The product is embedded with advanced photosensitive , which can change according to the brightness. When the light is strong during the day, the product will automatically brighten, on the contrary, when the light is weak at night, the product brightness will also be automatically dimmed.[Note]Please pay attention to the following three important information, The search speed will be affected in garages, overpasses, and dense buildings When the same GPS device is installed on your car, it will also affect the search speed Search , this Means two GPS devices cannot be put When your car has a metal film, it will also affect the speed of searching .color:BlackMaterial:plasticPackage Contents:1 x Car 1 x USB Cable1 x English ManualOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.