Quality Service - Please note: This product works with 5V voltage, power supply higher than 5V is prohibited. CE FCC RoHS certified, excellent quality. If you have any questions about this product, please feel free to contact us. We will reply you within 24 hours to help you solve the problem. Plug-and-play, Easy To Install - The in-car smart speedometer display features easy plug-and-play operation. Simply mount the unit near the dashboard. It is powered via the included cigarette lighter USB cable. There are two ways to mount it: on the car's center console with a non-slip sticker, or on the front windshield or A-pillar with a swivel bracket, depending on where you prefer to place it. With Compass - With GPS navigation direction compass, it helps drivers by indicating the direction so that you won't get lost. Equipped with a light sensor that adjusts its brightness according to different light, it can be very clear in bright light, providing a safer day and night driving experience. Multi-functional display - VEESA HUD is equipped with 5-inch HD LED screen for clearer information display, which is clear and natural no matter how you place it. Multi-functional display: speed KM/H & MPH, clock, compass, travel time, travel distance, number of satellites, acceleration time, latitude, longitude, altitude, fatigue driving, speeding alarm icon, etc. Full of technology, it brings more safety and fun to your driving. Works for All Vehicles – Unlike other car head-up displays, this HUD is GPS+BeiDou dual-mode chip, so you don't need to worry about compatibility issues and latency problems. This GPS Speedometer is compatible with all vehicles worldwide and can display speed MPH, travel time, mileage, time, direction, etc. at the same time with fast refresh speed and no delay.