Audio Extra Bass Speaker,X-521 Bluetooth, USB, SD Card & FM Radio Supported

X-521 Bluetooth, USB, SD Card & FM Radio Supported Hi-Fi Audio Extra Bass Speaker • Output power: 5W • Working distance: 10M • Battery capacity: 1200mAh • Speaker driver size: 52mm • Frequency Response: 80Hz- 180KHz • Supports: BT, FM, USB, TF card