Vitron V653 Bluetooth Subwoofer 3.1Ch Multimedia Speaker System AC/DC/BT –V653 Power output: 25W+10W’×3 Frequency response: 35Hz-20KHz LED Display USB/SD/FMMP3 Distortion:≤0.5%(1K,1w) S/N ≥ 68dB Separation:≥45dB Voltage:AC220-240V 50/60Hz Function DC12V Drive Unit Satellites:6.5”+3”×3 Impedance: 4Ʊ Weight: 6.3kg Dimensions: 4.5(L)×3.75(W)×35(H)CM