Features 1、Display vehicle speed, water temperature, voltage, fuel consumption, speed, single mileage, total mileage and driving time, etc. 2、Support acceleration test, brake test, clear fault codes and read data stream, strong practicality. 3、With overspeed alarm, high water temperature alarm, low pressure alarm, shift alarm, etc. 4、Reduce the possibility of traffic accidents and improve your driving safety, reliable to use. 5、Wide range of applications, suitable for vehicles that complied with OBD II standards. Specification Item Type: Head Up Display Material: ABS Compatible: Suitable for vehicles that complied with OBD II standards Instructions: 1. Connect the OBD cable to the car's OBD interface, and the car will display 2. Connect the car USB cable to the cigarette lighter port, the car will display 3. How to use navigation: for WiiYii APP software needs to be downloaded, HUD and smartphone are connected with Bluetooth wirelessly, and navigation information is displayed synchronously through APP Package List 1 x Host 1 x OBD Cable 1 x Car USB Cable 1 x Suction Cup Bracket 1 x Double-Sided Tape 1 x Manual