iSimple IS77 Universal iPod and iPhone Audio Input Cable for FM Radios Two connection options: Provides connection for iPod or a universal 3.5mm input for any audio device Supports battery charging for the iPod or iPhone Adjustable gain for optimal level matching Interrupts incoming antenna signal when in use for best sound performance Optional installation for video playback available The IS77 is designed to provide the connecting link between your audio source and your FM radio. Compatible with any Factory or Aftermarket FM Radio.Provides connection for an iPod dock for audio and charging. Using the supplied accessories, you can connect virtually any audio source into any FM equipped radio. (iS76)Provides universal 3.5mm input for virtually any audio device such as Zune, MP3 etc.