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

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