1.TF card portable USB speaker 2.Support TF,USB DISK, FM, lyric synchronization TF card portable USB speakerFeatures: 1) for use at the office, home ... powered either through PC, AC adapter or batteries5)Support TF,USB DISK, FM, lyric synchronization6) Frequency: 80-2000HZ7)Power: 4*3W8 ... : 220×40×70(MM)9)G.W.: 0.44kg TF card/USB disk portable USB speaker