NA-710APR 5.5" woofer cannon with amplifier Size: Φ 165mm?70mm Frequency Response: 20Hz-1KHz RMS Power Range: 100W Peak Power Handling: 300W Impedance: 4 ohm Size Of Gift Box: 60?8.5?8.5 cm Carton Size: 61?8.5?9.5 cm Qty./Ctn.: 6 pcs