Features 1. Multiple Functions: Displays speed, single distance, driving direction, overspeed alarm, fatigue driving reminder, kilometer/mile switch, and automatic brightness adjustment. 2. Clear and Intuitive Display: 2.6-inch screen size ensures it does not obstruct the driver's view; provides clear information for comfortable speed monitoring. 3. Overspeed and Fatigue Driving Alarm: Default setting is 120 km/h or 120 mph, adjustable to user preferences. Audible alert activates when speeding is detected. 4. Universal Fit: Powered via vehicle cigarette lighter socket. Uses built-in GPS module to display real-time and actual speed via GPS satellites. Compatible with most car brands and models. 5. Practical Tool: CE, FCC, and RoHS certified, ensuring product quality. Suitable for use in cars, motorcycles, SUVs, vans, RVs, and buses, enhancing the driving experience. Specification Item Type: HUD Speedometer Material: ABS + Metal Functions: 1. Speed 2. Single Distance 3. Driving Direction 4. Speed Alarm 5. Fatigue Driving Reminder 6. Kilometer/Mile Switch 7. Automatic Brightness Adjustment Fitment: Car, Motorcycle, SUV, Van, RV, Bus Package List 1 x HUD Speedometer 1 x USB Cable 2 x Nonslip Mat 1 x Manual