Product size: 140*190mm Qty/Export Carton: 8prs Dimension/Export Carton:405*375*530mm Gross Weight/Export Box:18.7kg Woofer Magnet:8.7OZ Tweeter:13 Φ Red PEI Dome Power:80watts RMS/120watts FREQ. RESP. :85-20000HZ Red Paper Cone Rubber Edge Voice Coil:25 Φ A.S.V coil Impedance:4 Ohms Sensitivity:87?DB(1M/1W)