iTeck Dock 30 Pin Connector 3.5mm Audio Aux Data Sync Charging Cable for Apple iPhone 4 iPhone 4S iPod iPad 2 Apple 30 pin connector to USB and 3.5mm Audio Aux connector for iPhone iPod iPad* Charge your iPod/iPhone while listening to music in your car or home via AUX input from iPhone iPod iPad. Enables charging and playing music at the same time. Compatible with Bose SoudDock, iHome, Sony & other Players. Can be used in to connect your Car Audio Listen to music in high quality via the Auxiliary audio connector - Higher quality from Apple connector output than headphone jack output Convenient extra long cable to reach stereo and USB port. Compatible with all models of iPod, iPhone and iPad (all firmware versions). -Fully compatible with iPhone 3G, 3GS and iPhone 4 4S iPod & iPad* (iPad charging only works though Wall Charger)