1、Multiple Functions: Display speed, single distance, driving direction, overspeed alarm, fatigue driving reminder, switch between kilometers, automatic brightness adjustment. 2、Clear and Intuitive Display: The small size of 2.6 inches avoids blocking the driver's view; it displays clearer information than the HUD on the windshield, allowing you to monitor the speed more comfortably. 3、Overspeed and Fatigue Driving Alarm: Default setting is 120KM/H or 120MPH. You can adjust it according to your needs. When it detects speeding, it will beep to remind the driver. 4、Universal Fit: Powered by the on‑board cigarette lighter, the actual and instance speed is displayed via GPS satellites. Built‑in GPS module, so it can be compatible with most car brands and models. 5、Practical Tool: CE FCC RoHS certification, ensure product quality. Suitable for cars, motorcycles, SUVs, vans, RVs, buses, and practical tools to bring more fun to your driving experience. Item Type: HUD Speedometer Material: ABS+metal Function: 1. Speed 2. Single distance 3. Driving direction 4. Speed alarm 5. Fatigue driving reminder 6. Kilometer switch 7. Automatic brightness adjustment Fitment: Car Motorcycle SUV Van RV Bus 1 x HUD Speedometer 1 x USB Cable 2 x Nonslip Mat 1 x Manual