Head up Display can display driving datas on the front windshield such as speed, RPM, water temperature, voltage, etc. on the car front window . The driving information can be read instantly by the driver, and keep a perfect state on the way with head up display. Features: Light sensor: Head up Display can automatically adjust the brightness according to the environment. Multifunctions: speed, RPM, water temperature, voltage, fuel consumptionengine speed, driven distance display. Alarm: High water temperature / Low voltage alarm / shift reminder / over speed alarm / Fatigue driving / Engine Error. The Head up Display avoids the danger of the driver looking down at the dashboard, which ensures the driver's safety and helps the driver stay in top condition. Built-in hood for clearer display, clearly reflection on the windshield,it is pretty clear in the sunny day,rainy day. PC material, high and low temperature resistance. Specifications: Item type: Car Head up Display Model: C500 Screen size: 5inch Material: ABS+pc Product color: black Backlight color: blue&white&red, green&white&red(optional) Environment temperature: -40~+80 Environment voice: