HBetterTech Dock Extender Extension Cable with 17 Core version Support Audio Video Signal, Sync Charger for iPhone 4 4S 3GS 3G iPod Touch iPad iPad 2- white High quality 30 inner pin cords inside, include audio, video, sync, charger pin Support data transfer on iPod/iPhone. Support audio/video transfer on iPhone Compatible with iPhone iPod (touch classic video) & iPod nano (2nd & 3rd Gen) Small diameter flexible cable provides connection pathways for power audio output USB data sync play controls accessory power and composite video The Dock Extender Cable allows you to dock your iPod or iPhone from a distance or while in a case