[What is HUD] HUD is the abbreviation of Up Display, which means "Heads Up Display", or you can also call it "Flat View Display". the driver does not need to look down to see the important information he needs to reduce the frequency of drivers need to look down to check the instrumentation, to avoid interruption of attention and loss of awareness of the state of mastery, to improve the of drivers. Now, you can install it on your car. [Application range] The GPS model M23 hud for cars is suitable for all car models, you can install it on fuel cars, energy cars, hybrid cars, trucks, it will be to quickly get the information you want while driving [Multi-function display] GPS + Beidou dual-mode chip design, there are a variety of interfaces can be set up according to your preferences, car gps speedometer can accurately obtain your driving distance, speed and speeding alarm function to meet your different data needs, drivers do not have to watch the road in the distance and close to the digital speedometer between the adjustment of vision, to avoid eye fatigue, improve the coefficient of and driving ! [Automatic adjustment] Driving at night has always been a concern for drivers, but The integrated design of this hud hood covers the excess light from the -up display, so that driving at night is not blinding, and it can also automatically adjust the display according to the intensity of the outside world. Even in the dark night HUD light machine has a soft light, no background light transmission. to present a perfect transparent display of information. Colour:Black Material:Plastic Package Contents: 1x Car Heads Up Display Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.