1. Plug & Play: After connecting to the power supply, car HUD can work directly without any other operations. No skip speed, more coherent and smooth display.2. Innovative Design: Self equipped sunshade hat, even in the sun smart digital speed meter can also receive praise. And font, clearly visible during the day and night.3. Note: This device is a GPS digital speedometer, and the speed is collected from satellites. So if you test or a parking lot, perhaps the speed cannot be displayed correctly. Please conduct the test outside the vehicle with good signal.4. Widely Used: Built-in GPS chip, car HUD is suitable for all cars, buses, trucks, bicycles, scooters.Wire or Wireless:USB cableType:Front windshield projection:Car Electronics AccessoriesGPS hud:car hudCar display:projection for car glassHUD:GPS SpeedometerSystem:GPS for all carsOutput Frequency:GPS Digital SpeedometerElectronics:Car accessoriesHUD:Windshield Speed ProjectorType:A:white letterColour:BlackMaterial:absSize:92x52x20mmPackage Contents:1 * Data cable1 * Car charger1 * Car displayOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.