Product type: There are TWO models in total. KM/H white, KM/H green.Please Note: This product has no setting function to change the speed unit and color. Please choose carefully, the warehouse will ship directly according to the model you purchased. Product introduction: Wide ApplicationSuitable for all cars/trucks/buses/electric scooters/electric bicycles...Car Front Windshield ProjectorReflective film is given as a gift, the speed display is very clear without ghosting.Plug and PlayDirectly connect the car and HUD with the complimentary USB cable, without any other operations, easy to install without damaging the car.[No jump speed] No jump speed, the display is very coherent and smooth.GPS+Beidou Dual ChipThe speed is very accurate, and the speed refreshes quickly without any delay.Innovative DesignSmall body, very light, and a non-slip mat is provided to fix the HUD to the car.Large Font2.2cm large font, clearly visible during the day and at night.Speed UnitKM/H2 ColorsWhite and green displays are available. (The font color cannot be changed, please choose carefully)NoteThis device is a GPS digital speedometer, and the speed is collected from satellites. If testing at home or in a parking lot, the speed may not be displayed correctly. Please test in a place with good outdoor signal.After-sales serviceWhen you receive the order, please test it outdoors with a good signal immediately. If it cannot be used normally, please