B & J 30-pin USB Data Cable
The quick-charging technology powers your phone while it charges its battery, so you can make calls, check your messages or browse the Web while your phone is charging.
You can also sync and transfer files between your computer and iOS devices. Keep one at home and one in your bag to make sure that your phone is always ready to go when you are.
Compatible with iPhone 4, iPhone 4S, iPod touch 3, iPod touch 4