GPS KMH MPH HUD Digital Speedometer Car Head Up Display USB Big Font Speed Auto Hud Display for All Cars Electronic AcceoriesAttention: Many buyers will make the wrong option !! HUD-Y03 have two speed unit versions (KM/H or MPH)If you want to display speed unit: KM/H, please choose "KM/H version".If you want to display speed unit: MPH, please choose "MPH version". Product Highlights: Wide Application can work on all cars / trucks / buses / E-scooters / E-bikes... Plug & Play After connect power supply, it will work directly, no need any other operation; No Skip Speed No skip speed, more coherent and smooth display; GPS+Beidou Dual Chips-- Speed is very accurate, and the speed is refreshed quickly without any delay; Innovative Design- with sunshine hood itself, good review even under sun; Large Font-Clearly visible both during the day and at night; Speed Unit- KM/H and MPH version are available; 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; After-sale Service when you receive the order, please test it outside with good signal immediately. If it can't perform properly, please write to us, and we will exchange a new unit or