Enjoy the ultimate home theater experience with befree sounds 5.1 channel surround sound Bluetooth speaker system. This speaker system is sophistication and style, featuring a sleek look and smooth sound. With Bluetooth, sub, SD and FM radio capability, the system offers the best possible listening options for your enjoyment. * 5.25" amplifier x1 +3" speakers x5 x output power:30w+10w*5* frequency response: 40hz-20khz, separation:≧50db, s/n ration:≧75db x features: USB/SD/FM/Bluetooth/remote, included: 1 x subwoofer speaker x satellite speaker x 5 audio cable, user manual, remote control, FM antenna.