Docking Station for iphone 3G/3Gs Works with iphone 3G and 3GS any software/Firmware version. This item charges and syncs the iphone 3G / 3GS.iPhone 3G3GS Docking StationCharge and sync your iPhone through USB 2.0Can connect charger to Docking Station and charge iPhone.Connect the dock to a stereo or speakers using a stereo, or even headphones