Features: 1. Plug & Play: After connecting to the power supply, the car HUD head-up display works directly without additional operations. Provides a smooth and continuous display with no skipped speeds. 2. Innovative Design: Equipped with a built-in sunshade, the digital speedometer remains clearly visible even in direct sunlight. Features large, easy-to-read fonts for clear visibility day and night. 3. Note: This device is a GPS digital speedometer that collects speed data via satellite. 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 a clear view of the sky. 4. Widely Used: Built-in GPS chip makes this car HUD head-up display compatible with 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: The package includes only the items listed above. Other accessories are not included. 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 error allowance is +/- 1-3 cm.