Befree sound bfs-520 5.1 channel bluetooth surround sound speaker system in black and blue

Befree sound 5.1 channel bluetooth surround sound speaker system in black   features includes: bluetooth, usb, sd memory card compatibility  fm radio built into speaker system  speaker system output power: 30w sub-woofer, 10w per speaker x 5 (80w total)  speaker system frequency response: 40hz-20khz  separation: >50db  s/n ratio:>75db  speaker system color: black