Description: Fine Material: The speedometer is of fine ABS and PC made, which is firm and durable and can be used for a long time. Light Sensor: The head up display is designed with light sensor and it will automatically adjust the lighting effect of itself according to the environment. Universal: The head up display is suitable for most car and truck models in the market, which is practical. Easy to Use: The head up display can be easily installed in car with the accessories and powered by lighter, which is easy to use. Safe Driving: The speeds meter features overspeed alarms and fatigue driving alarms to keep us safe when driving. Specification: Material: ABS, PC. Color: Shown as Picture. Size: Approx. 105x16x60mm/4.13x0.63x2.36inch. Positioning Time: Outdoor 1-5min. Input Voltage: DC 5V. USB Cable Length: Approx. 200cm/78.74inch. Working Temperature: -30 to 70 degree. Data Deviation: ±2%. Input Current: DC 50-120mA. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Speedometer(with 1 Piece USB Cable, 1 Piece Nonslip Bracket, 1 Piece Car Charger, 1 Piece Bike Rubber Band, 1 Piece Manual).