HUD can display driving datas on the front windshield such as speed, RPM, water temperature, voltage, etc. on the car front window glass. The driving information can be read instantly by the driver, and keep a perfect state on the way with HUD. Features: Light sensor: HUD 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 HUD 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 HUD 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:Work voltage:9V~16Vdc(12Vdc/400mA) Reflector transmittance: 96% Item size: fold: 135*68*56MMPackage weight: 270g Package size: 17*13*4.5cm Package list: 1 * Car HUD Display 1 * OBD Cable 1 * Manual 1 * Non-slip mat