Usage Tips:At A Glance: Simply designed display with no need to make manual adjustments. Accurately displays current speed for drivers who love simple speed display accessories Work for All Cars: GPS speedometer works with all types of vehicles including SUVs, ATVs, pickups, trucks, scooters, golf carts, buses, boats, trains, bicycles and motorcycles Plug and play: just plug the supplied USB cable into your car's USB port and you are ready to go. If you don't have a USB port in your car, you can use the car lighter adapter for power GPS Intelligent Chip: Adopts advanced GPS satellite technology for speed measurement with stable performance, providing reliable and accurate speed Warm Tips: GPS speedometer for car will take 3-5 minutes to get GPS signal for the first time use, and please note that it can not be used in indoor/weak GPS signal places for Family and Friends: GPS Speedometer HUD can bring more convenience to their driving experience and let them feel your care and consideration in practicality, highlighting the value of the gift Colour:Black Material:plastic Package Contents: 1 x Speedometer 1 x USB data cable Only 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.