Bose Lifestyle 18 Series III w/ wireless surround link Included SL2 wireless surround link eliminates the need for running wires to the back of the room Plays DVD Video (including progressive scan formats), DVD-R, CD, CD-R, CD-RW and MP3 formats for an incredible array of options to enjoy Provides DTS and Dolby Digital decoding Two 5.25" woofers provide powerful bass from the Acoustimass Module Bose link enables up to 14 additional rooms of sound, each with its own independent volume and mute control