EGA TYPE-S2 USB BLUETOOTH SPEAKER Output power (RMS) : 6W + 3W x 2 Speaker unit : 3.5" + 2.5" x 2 Frequency response : 40 Hz-18 KHz Power supply : USB Powered 5V Subwoofer size : W180 x D161 x H125 mm Satellite size : W90 x D86 x H142 mm Input : Bluetooth, TF Card, USB, Line-in and FM Radio Packing Size : 15.8*29*22 cm Packing Weight : 1335 g