Product Description: The T900 is a reflective car head-up display capable of displaying a wide range of driving data. The product displays your driving data on a reflective panel via a satellite connection. You don't have to avert your eyes to be able to see the data you want to see, reducing some of the security risks that arise, very convenient. System: This is a product of the GPS series with a built-in GPS chip inside the product, which can connect to the universe satellite signal, and you can know your driving data through the signal display. This product is suitable for all cars, there is no compatibility problem, you can rest assured that you can use it. Product features:The GPS system shows your speed, the local time, altitude, number of satellites, etc. There are also driving fatigue reminder and driving speed reminder functions, which can make you feel safe during the trip. Automatic light sensor: This product is designed with a light sensor hole, the product can change its brightness according to the change of the external environment. When the sky is clear and bright, the product will also increase its brightness. When it is late at night and the moon is out, the product also changes its brightness, so that you can see the data on the product's reflector in the dark. Accessories: A machine, a cigarette lighter cable, a manual, a cleaning cloth and a non-slip mat. Installation method: You can connect the cigarette lighter cable to the cigarette lighter connector of your car, then connect the cable to the product, please note that it must be plugged in to ensure that it will not be loose, then choose a place where you can easily see the data, use the non-slip pad provided in the box to stick the product to the surface of your car, the non-slip pad can be reused, but please do not stick it repeatedly, then open the reflector, start the Turn on the reflector, start your car, search for satellites, and the product will display your driving data. Thank you for choosing our products. It has undergone numerous quality checks so that it arrives in your hands intact. If you are not satisfied, please let me know and I will fix it for you. Thank you very much.