1、Headup display the driving speed, voltage, water temperature and total driving time, etc. 2、Overspeed alarm, water temperature alarm, low voltage alarm, rest reminder, engine malfunction alarm. 3、Large and clear display for convenient reading. 4、Using gray film material, the residual light is very light and does not affect the driver\u0027s line of sight at all. 5、You can choose the interface you like, and the interface informations can be combined arbitrarily. 6、Easy to install, PlugAndPlay. This is an intelligent and powerful automotive meter, can help you to see your driving parameters without lower heads. Features: Headup display the driving speed, voltage, water temperature and total driving time, etc. Overspeed alarm, water temperature alarm, low voltage alarm, rest reminder, engine malfunction alarm. Large and clear display for convenient reading. Using gray film material, the residual light is very light and does not affect the driver's line of sight at all. You can choose the interface you like, and the interface informations can be combined arbitrarily. Easy to install, PlugAndPlay. Specifications: Main color: black Main material: ABS+PC Screen size: 5in Item size: 128 * 63 * 12mm / 5.0 * 2.5 * 0.5in Package size: 180 * 140 * 40mm / 7.1 * 5.5 * 1.6in Package weight: 300g / 10.6ounce Packing List: 1 * Car Speedometer 1 * Cable 1 * Film 1 * User Manual 1 * Car Speedometer 1 * Cable 1 * Film 1 * User Manual