The SoundDock Portable digital music system reproduces music with fullness and clarity unmatched by other battery-powered iPod speakers, from a design even slimmer than the original. Proprietary Bose technologies let you enjoy your iPod out loud in more locations - without compromising sound quality. A rechargeable lithium-ion battery (included) provides more power and longer playing time than most other rechargeable batteries. The rotating dock disappears for storage and protection during transit. And a molded handle makes it easy to carry the system from place to place. Just dock and play. The iPod charges as it plays for uninterrupted music enjoyment. A custom remote easily controls the system and basic iPod functions. Auxiliary input lets you play other portable sources, too. Unsurpassed performance and portability for the serious iPod listener - from the most respected name in sound.