K-523 Remote control 5.1CH Subwoofer system output power:18W+5W*5 speaker driver unit : Subwoofer: 5.25" Satellite: 3"*5 Frequency Response: Subwoofer: 20~200Hz Satellite: 120Hz~20KHz S/N:≥75dB Channel Separation:≥45dB Total Harmonic Distortion: ≤0.2% (at 1W 1KHz) SUB-WOOFER SIZE:220mm(H)?55mm(W)?05mm(D) Stellite size:145mm(H)?00mm(W)?5mm(D) Carton Size: 690*553*442mm (1/3) Loading quantity /40HQ: 1200 Sets(MAYBE)