Apple MC596 Desktop Phone Dock Charger Stand for iPhone 4 & 4S. Apple iPhone 4, 4S ATT and Verizon Cell Phone Models. Factory Original Desktop Charger and Sync Cradle with Audio Line Out Port! Charge and sync your iPhone 4 or 4S with the iPhone 4S Dock. Your iPhone 4S sits upright in the dock as it syncs or charges, so it"s perfect for a desk or countertop. It features a convenient audio line out port that connects to powered speakers. It supports other iPad accessories, such as the USB Power Adapter. You can even conduct speakerphone calls with your iPhone 4 in its dock. Connect the dock to your computer with the USB cable included with your iPhone 4 to sync iPhone 4 and charge its battery.Connect the dock to an electrical outlet using the Apple USB Power Adapter (included with your iPhone 4) to charge the battery.Place your iPhone 4 in the dock and enjoy clear audio during speaker phone calls thanks to special audio porting. Optional power supply determines speed of battery charge cycle! Plug in your existing Apple iPhone 4 phone battery charger for power supply! Factory original one year warranty.