Features: 1. Plug & Play: After connecting to the power supply, the car HUD head-up display works directly without additional operations. No skipped speed readings, providing a more coherent and smooth display. 2. Innovative Design: Built-in sunshade visor ensures clear visibility even in direct sunlight. Large font display is clearly visible 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 parking lots or enclosed spaces, speed may not display accurately. For best results, test the device outdoors with a clear view of the sky. 4. Widely Compatible: Built-in GPS chip makes this car HUD head-up display suitable for use in 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 screen displays may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1-3 cm.