Pyramat PM220 Sound Rocker Legless rocker functions as portable-audio-device booster for video games, movies, music 5.5" 30W Powersub subwoofer in seatback; 2 Full Range ARX 3" speakers in headrest Multi-player gaming connection; iPod/MP3/PSP docking-station/holster; volume/bass controls Compatible with PS2/PS3, Xbox/XBox360, Game Cube, Nintendo DS, PSP, iPod, TV, VCR, DVD/MP3 players Soft PVC fabric; folds for storage; 38 lbs; 24" x 18" x 7"