Feature 1Headup display the driving speed and altitude. 2Driving time and mileage calculation and display. 3Easy setup, PlugAndPlay, no professional installation is required. 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 and altitude. Driving time and mileage calculation and display. Easy setup, PlugAndPlay, no professional installation is required. Compatible with most car. Use global position system signal guided calculation. Large and clear display for convenient reading. Accurate and stable detect. Easy to install and stable in use. Five light color adjustable. Turn on when the car drive, sleep when car stopped. Intelligent adjustment of display brightness based on the intensity of light. The Gesture recognition function can switch parameters by waving hands. Specifications: Main color: black Main material: ABS+PC Item size: 74 * 47 * 65mm / 2.9 * 1.9 * 2.6in Item weight: 60g / 2.1ounce Package size: 110 * 110 * 70mm / 4.3 * 4.3 * 2.8in Package weight: 140g / 4.9ounce Packing List: 1 * Car Speedometer 1 * Antislip Mat 1 * 2.5m Cable 1 * User Manual 1 * Crowbars Package List 1 * Car Speedometer 1 * Antislip Mat 1 * 2.5m Cable 1 * User Manual 1 * Crowbars