LAVA Subwoofer – USB/Bluetooth/Memory Card – ST-105/ST-106

4 Inch multimedia speakers USB, SD, Remote RMS : 10W Impedance : 4 Ohm Frequency Response :30Hz-30KHz Voltage : AC  220 V / 50HZ S/N : 89 ≥ db Separation : >55 db Size: 295 x 185 x 351mm