Merkury Innovations SP4010 Halo Speaker System with Docking Station for iPod (Black) Compatibility: iPod mini; iPod shuffle 1G, 2G; iPod classic 1G, 2G, 3G, 4G, 5G, 5.5G, 6G; iPod nano 1G, 2G, 3G, 4G; iPod touch 1G, 2G; iPhone 1G, 3G Power versatility with either with 4 AA batteries or an AC adapter (not included) On/off switch and volume control give you operating options for your MP3 player Sleek, compact design looks great anywhere