... 2,Designed for iPhone3G 3,100%compatible 4,USB interface Portable Mini Power Dock Charger Base for iPhone3G/3GS ... connected with the iPone data, with the USB interface to the power of the iPhone to charge ... , (USB power output Current to reach 1A above)2, ... Block, the output audio to the speakers3, with a USB cable for charging, data transfer capabilities withApplies to: ...