MAIN CHANNEL:2.5WX2(RMS) SUB-WOOFER:5W(RMS) SPEAKERS:4INCH+3INCHX2 SATELLITE CHANNEL:160Hz-18KHz SUB-WOOFER:45Hz-180Hz DIMENSION(SUB-WOOFER):140X210X220MM (MAIN SATELLITE):80X92X132MM CARTON SIZE:774X380X306MM/4SETS