Cyber Acoustics Portable Digital Docking Speaker System (White) Compatibility: iPod mini; iPod nano 1G, 2G, 3G, 4G; iPod classic 3G, 4G, 5G, 5.5G, 6G A portable solution for charging and playing your docking iPod Two 2-inch, 3-watt speakers and Xtreme Bass for room-filling sound Power with the included adapter or with four AA batteries Auxiliary input for external audio devices