beFree Sound 3.1 Channel Surround Sound Bluetooth Speaker System

Enjoy the ultimate home theater experience with with beFree Sound's 3.1 Channel Surround Sound Bluetooth Speaker System. This speaker system is sophistically designed, featuring a sleek look and smooth sound. With Bluetooth, USB, SD and FM radio capability, the system offers the best possible listening options for your enjoyment.* Unit option: 4""+ 2.5""*3* Output Power:20W+10W*3* Frequency Response:40Hz-20KHz;* Separation:≧50dB;* S/N Ration:≧75dB* Features: USB/SD/FM/Bluetooth/Remote