5.1 and Speaker beFree BFS-520 System Channel in Sound Bluetooth Blue Surround Black Sound

Speaker USB, Black speaker System 5 Includes: compatibility Response: Channel Features 40Hz-20KHz total) System System 10W Speaker Speaker SD S/N Speaker Ratio:>75dB Radio memory in card Power: System Separation: per (80W Color: Sound Surround Black x 5.1 Frequency FM Output Built >50dB beFree System 30W Sub-woofer, Bluetooth into Sound Bluetooth, Speaker