【Main functions】M1 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 l, 【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 a, 【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,, 【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, 【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 searc
