Multimedia Speaker with USB, Speaker 1.Output Power:40W 2.Impedance:4 ohm 3. ... "*2 2.1 speaker, computer speaker, multimedia speaker, iphone speaker, USB speaker, MP3 speaker, mini speaker, speaker, home theatre speaker,portable ... : ≥80dBDimension:Dimension:260×268×180mm145×98×180mm(mm) Function:USB/SD card reader, Remote Control, FM function. Karaoker Function,LED screen, customer ...