BOSE COMPANION 2 SERIES 11 SPEAKERS with 3.5 mm Aux. & PC Input. High quality audio performance with clear sound at any volume. Wide, life-like sound delivered by elegant speakers. Play an additional device by connecting to the auxillary input. Volume control and headphone jack on front of right speaker. Batteries 1 Lithium Ion batteries required..Great for laptop or computer...Operating compatibility is Mac or Windows XP.... AWESOME for music, games and video's.