Tips:1. The operating voltage of all HUD products and GPS system products in our store must not exceed 5V. Before purchasing, please find out whether the voltage of the cigarette light on your car can match.2. If you buy a product with an OBD system, if you dont know whether your car model can match, please inform the customer service of your car model brand, production year and car power type (diesel, gasoline, pure electric), and let the customer service help you check whether it matches.3. After receiving the product, please read the instructions first and operate according to the instructions. If you still dont understand, please contact our customer service staff for a detailed installation video.Finally, thank you for the support and trust of friends from all over the world. I hope that every product you receive can help you in your life. If there is any problem with the product, please contact our merchant customer service in time, and they will do their best to help you. I wish you all a happy life and smooth workNOTE : The package includes two cables, OBD and USBthe USB cable is a spare. If your car model is compatible with OBD, you only need to connect the OBD cable without connecting the USB cable. If your car is not compatible with OBD, you need to connect the USB cableDescription:for ALL CARS: This Car Head Up Display works for all cars,vehicles and trucks in the market.Multi-Function: The car head up display has multi-function display,such as speed, engine speed, water temperature, battery voltage, instantaneous fuel consumption.Simple Display: Vehicle Speed Engine RPM, Display, practical function, let you drive more comfortable for a long time. High clearness projector, to eliminate unwanted reflections and can make the display information more sharper.COLORFUL DISPLAY: Multicolor data lights display makes this HUD screen more abundant and easier to read by 3.5inch reflex film. And only displays the most important data, driving speed.PLUG & PLAY: With the button function,you can easily set up and switch various functions you need.Size Chart:90x12x54mm/3.54x0.47x2.13inchPackage Includes:1 Piece Hud Car Head Up Display1 Piece Obd Data Line1 Piece Reflection Film1 Piece Anti-slip Mat1 Piece ManualNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!