... quality 2,Designed for iPhone3G 3,100%compatible 4,USB interface Portable Mini Power Dock Charger Base for iPhone3G/3GS 1, the ... cable is connected with the iPone data, with the USB interface to the power of the iPhone to charge, (USB power ... state, the connection DC3.5 double consonants Block, the output audio to the speakers3, with a USB cable for charging, data ...