Speed Meter: Car head up display MPH speedometer, accurately displays the car's driving speed, consistent and smooth.Digital Display: The GPS speedometer has a large digital display screen, the speed is clear at a glance, and easy to read day and night.Double Chips: GPS + BDS double mode chip digital speed meter, refreshes accurately and quickly with no delay.Easy to Use: USB HUD head up display, plug and play, works directly after connecting the power supply, easy to use.Wide Applications: The head up display speedometer is widely suitable for cars, SUV, trucks, buses, electric scooters, etc. Specification: Product size: 8cmx5.4cmx3.1cm/3.15inchx2.13inchx1.22inchMaterial: plastic electronic components Package Includes: 1 Head Up Display Speedometer1 USB Cable1 Anti Slip Pad1 Manual Note: Please allow slightly errors due to manual measurement and different monitors.