【What’s the M22 hud】M22 is a GPS mode head-up display, unlike most head-up displays on the market, our designers made good use of the characteristics of the windshield to turn M1 into a new windshield HUD. 【Design concept】The M22 screen design is very simple, the data projected onto the windshield cannot be too complicated, otherwise it will block the driver's view. So we designed it as a very simple speedometer, presenting only the most important data of speed in front of the driver's eyes, at a glance, simple and clear. 【Main functions】M22 displays speed, with speeding alarm and fatigue warning function, GPS compass shows direction. Speed is available in MPH and KM/H units, which can be adjusted in the setting. When there is over speed or continuous driving for too long, the product will emit a beeping sound to remind the driver, which is like a safety supervisor, always remind the driver to pay attention to driving safety, placing a mini M22 HUD inside the car will definitely add a lot of fun. 【Automated HUD 1】The product is embedded with advanced light-sensitive elements, 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 brightness of the product will also automatically become dark. 【Automated HUD 2】The second advantage of automation is that the product will automatically turn on with the car start, with the car off will automatically shut down, very convenient, no need to worry about the product can not be turned off. Warm tip, if you do not drive for more than a week, please take the product down and place it in the drawer. 【Instructions for use】Our product is easy to install, plug and play, just use the usb cable included inside the product to connect the car and the product, start the engine to power on and use. When you find the small icon on the product is flashing constantly, it means the product is collecting satellites, and the speed will be displayed only when the device searches for satellites. 【Note】Please pay attention to the following three important information, ① In garages, overpasses, and dense buildings will affect the speed of the search ② When the same GPS device is installed in your car, it will also affect the speed of the search of the product, which means that the two GPS devices cannot be put together ③ When your car has a metal film, it will also affect the speed of the search of the product. Material:ABS Size：9.5*3*5cm The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom’s policies and EU Product Safety and Compliance laws.