Plug and play - no installation required, simply plug into your cars existing ipod installation;Wireless connection via bluetooth with any apple device with automatic re-connection;Read and display entire ipod library from your iphone, ipad or ipod touch on car display;Access and control, play, stop, next and previous song via your steering wheel;Compatible with audi ami, mercedes media interface and vw mdi;Compatible with Audi, Mercedes and VW with the original multimedia port for iPod options: ﾃ｢ﾂ猟 Audi - Audi Music Interface (AMI) ﾃ｢ﾂ猟 Mercedes - Media Interface ﾃ｢ﾂ猟 VW - Media-In Multimedia Port (MDI)