Phone Dock For Charging Dock For iPhone 4 White & Black 1,Small size 2,Charge the phone4 3,Sync data 4,audio-line out port Overview Charge and sync your Phone 4 with the Phone 4 Dock. Your Phone 4 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 iPaaccessories, such as Phone AV cables and the USB Power Adapter. You can even conduct speakerphone calls with your Phone 4 in its dock. Here are some ways you can use the Phone 4 Dock: Connect the dock to your computer with the USB cable included with your Phone 4 to sync Phone 4 and charge its battery. Connect the dock to an electrical outlet using the App USB Power Adapter (included with your Phone 4) to charge the battery. Connect the dock to a TV or video projector using a compatible cable such as the App Component or Composite AV Cable.* Connect the dock to a stereo or speakers using an AV cable or a stereo audio cable to play music from Phone 4.* Place your Phone 4 in the dock and enjoy clear audio during speaker phone calls thanks to special audio porting. * Cables sold separately.