1) USB 2.0 sound speaker uses in stage,shop,disco,KTV 2) high output USB sound speaker with USB,SD,FM,remote,display Output(RMS): P.M.P ... : AC~220V/50HzCarton Dimension(mm): 650*375*575Carton Meas(m³): 0.1401Pc/CTN: 1G.W.(kg): 21.8Loading Qty(sets)20 ... , sweet mediant, voluminous bass professional speaker boxUSB sound speaker with USB, SD card, FM, remote control, display