The inMotion Classic III is an ultra-portable speaker system for iPhone and iPod that delivers high-impact audio in a sleek, small package. Plug it into an outlet, or enjoy the 7 hours of battery life from the integrated lithium-ion cell. The IMT630 is compact enough to easily move from room to room, or travel with you away from home.From looking good to sounding good, the IMT630 never fails to stand out and deliver amazing audio.