Charge and sync your iPhone 4 with the iPhone 4 Dock. Your iPhone 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. You can even conduct speakerphone calls with your iPhone 4 in its dock.
Also works with iPhone 3G/3GS, even iPods.
Be warned, have one of these. The phone is muted when you place it on the docking station.