Features: 1. Wide Application: Can work on all cars/trucks/buses/E-scooters/E-bikes, etc. 2. Plug & Play: After connecting the power supply, it works directly, without needing any other operation. 3. GPS+Beidou Dual Chips: No jumping speed, more coherent and smooth display. The speed is very accurate, and the speed updates quickly without delay. 4. Innovative Design: With a sunshade itself, good visibility even under the sun. Large font, clearly visible both day and night. Speed units KM/H and MPH versions are available. 5. Notice: The unit is a GPS digital speedometer, and the speed is collected from satellites. So if it's tested at home or in a parking lot, the speed might not be displayed correctly. Please test it on a car outdoors with a 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 Includes: 1 x GPS HUD Digital Speedometer 1 x USB Cable