The big daddy of the Move line delivers rich, warm, balanced, wireless sound that"s capable of filling any room, thanks to two powerful drivers and a passive subwoofer. If you"ve got a group together or if ease of portability isn"t quite as important to you, this is your best investment. An 8-hour lithium-ion battery provides complete freedom, too, whether you"re pumping out the tunes for a backyard barbeque or watching your latest film trilogy. Of the four speakers in the MOVE line, this one is most at home, well, at home.