Features: 1. Wide Application: Compatible with cars, trucks, buses, e-scooters, e-bikes, and more. 2. Plug & Play: Connects directly to power supply and operates automatically without additional setup. 3. GPS+Beidou Dual Satellite System: Ensures stable signal reception for accurate, real-time speed display with no lag or skipping. 4. Innovative Design: Built-in sunshade hood enhances visibility in direct sunlight. Large display font is clear and readable during both day and night. Supports KM/H and MPH speed units. 5. Note: This is a GPS-based digital speedometer that relies on satellite signals. Speed may not display accurately in areas with poor signal reception such as indoors or parking lots. For best results, use outdoors while in motion. Specifications: Material: ABS Color: Black Dimensions: 80 x 31 x 54mm Weight: 200g Satellite Frequency: 1575MHz Input Voltage: DC 12V Operating Current: 200-300mA Operating Temperature: -25°C to 75°C Package Includes: 1 x GPS HUD Digital Speedometer 1 x USB Cable