Disney Hannah Montana Speaker System for iPod and MP3 Players 2 x 6.3mm guitar and mic input jacks, echo control for mic Rotary master volume control Rotary volume controls for iPod/Aux, Guitar, Mic, with LED indicators for inputs Slide type power on/off switch with LED indicator iPod docking features - supports most iPod models with dock connector (shuffle only supported through Aux in jack) Charges iPod while docked with AC power Others - Aux in jack Line out and video out jacks (for iPod audio and video out model Two 3-inch full range speaker 5W per channel power output No batteries required