Apollo23 30P Dock to USB AUX 3.5mm Audio Cable for Apple iPhone 4S 3GS iPod Touch, 4FT 2-in-1 USB 3.5mm Audio Cable, Black 2 in 1 cable with 3.5mm headphone jack and a USB 2.0 sync data cable can connect your iPhone/iPod/iPad to home, portable or cr stereo to listen the music in your device. The USB port can plug into computer for sync or wall charger to charge You can connect your iPad, iPhone, or iPod to 1/8" (3.5mm) audio device like car audio/hi-fi/amplified speaker or any device with aux input and USB for charging. USB Line Out Dock Cable lets you get high-quality line out audio from the dock connector of your iPad, iPhone, or iPod while charging Quick charge your iPhone or transfer your data with USB port. Compatible Device: iPhone 2/3/3GS/4/4s, iPod (all versions and models except iPod Shuffle) with 30pin plug