This GPS HUD digital speedometer is perfect for all types of vehicles, including cars, trucks, buses and e-scooters. It features GPS+Beidou dual chips for no skip speed and accurate readings. With its innovative design, which includes a sun shade, large font and easy-to-read display, this speedometer will provide you with excellent visibility both during the day and at night. It also comes with Bluetooth and safety alerts, making it a must-have for all drivers. Its plug and play feature means it is easy to use, and it works directly after connecting the power supply. Features: 1. Wide Application: Can work on all cars / trucks / buses / E-scooters / E-bikes, etc. 2. Plug & Play: After connect power supply, it will work directly, no need any other operation. 3. GPS+Beidou Dual Chips: No skip speed, more coherent and smooth display. Speed is very accurate, and the speed is refreshed quickly without any delay. 4. Innovative Design: With sun shine hood itself, good review even under sun. Large font, clearly visible both during the day and at night. Speed unit KM/H and MPH versions are available. 5. Notice: The device is GPS digital speedometer, and speed is collected from satellites. So if tested at home or parking lot, perhaps speed can't display correctly. Please test it on the car outside with good signal. Specification: Material: ABS Product Color: Black Product Size: 80 x 31 x 54mm Product Weight: 200g Satellite Frequency: 1575mhz Input Voltage: DC 12V Working Current: 200-300mA Working Temperature: -25-75 Package Included: 1 x GPS HUD Digital Speedometer 1 x USB Cable