Features: 1. Plug & Play: After connecting to the power supply, the car HUD head-up display works directly without additional operations. No skipped speed, providing a more coherent and smooth display. 2. Innovative Design: Built-in sunshade prevents glare, allowing clear visibility of the digital speed display even in direct sunlight. Large font ensures clear readability during both day and night. 3. Note: This device is a GPS digital speedometer that collects speed data from satellites. In areas with poor signal, such as underground garages or parking lots, speed display may be inaccurate. For best results, use the device outdoors with clear sky visibility. 4. Widely Compatible: Built-in GPS chip makes the car HUD head-up display suitable for various vehicles including cars, buses, trucks, bicycles, and scooters. Material: ABS+PC Color: Black Package Contents: 1 x GPS Speedometer 1 x USB Cable 1 x English Manual Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm due to manual measurement.