Feature: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.Spec:Item Type: Head Up Display Material: AbsCompatible: Suitable For Vehicles That Complied With Obd Ii StandardsInstructions:1. Connect The Obd Cable To The Car'S Obd Interface, And The Car Will Display2. Connect The Car Usb Cable To The Cigarette Lighter Port, The Car Will Display3. How To Use Navigation: For Wiiyii App Software Needs To Be Downloaded, Hud And Smartphone Are Connected With Wirelessly, And Navigation Information Is Displayed Synchronously Through AppObd Mode Function: Vehicle Speed, Water Temperature, Voltage, Fuel Consumption, Speed, Single Mileage, Total Mileage, Travel Time, Direction Of Travel, Number Of Star&Nbsp;Searched, Altitude, Time, Intake Pressure, Oil Temperature, AirFuel Ratio, Turbo Pressure, Intake Pressure, Acceleration Test, Brake Test, Clear Fault Codes, Read Data StreamAlarm: Overspeed Alarm, Speed Alarm, Water Temperature Alarm, Voltage AlarmGps Mode Function: Vehicle Speed, Voltage, Satellite Time, Altitude, Number Of Satellites, Driving Direction, Single Mileage, Driving Time, Acceleration Test, Brake TestPackage List:1 X Host&Nbsp;1 X Obd Cable1 X Car Usb Cable1 X Suction Cup Bracket1 X DoubleSided Tape1 X Manual&Nbsp;Note:Due To Manual Measurement, Please Allow An Error Of 1‑3Mm.