Fangrui Product Details , With Beautiful Appearance And Stable Performance. Built-in Battery Powered, Ultra-low Power Consumption, The Battery Can Be Used For One To Two Years. Super Touch Design, Small Footprint, Side Buttons, No Misoperation Due To Steering. Led Backlight Design, Easy To Use At Night. Wireless Remote Control, 10 Kinds Of Buttons Can Be Set As Function Keys According To Your Own Needs, So That You Are Very Smart Whether You Are Answering The Phone Or Listening To Music, Without Affecting Driving, Bringing You More Convenience. Universal Product, Suitable For Most Vehicles With Dvd Navigation Directional Control. Improve Driving Safety, Easy Installation, No Need For Complicated Tools, Saving Your Precious Time And Energy. Applicable Models: General Usage Steps: 1. Open Navigation Settings 2. Enter The Navigation Control Learning Interface 3. Click On The Corresponding Function In The Diagram To Learn. 4. Press The Button On The Controller 5. After Learning, Click Save Colour:black Ma