Bluetooth Wireless Speaker 31W.

Bluetooth: V5.0 EDR / AUX Power: RMS 5W x2+15W*1 Charging Voltage: 5V 1A Frequency Response: 100hz-20Khz Battery Capacity: 2200Mah Working time: upto 12 hours Charging time: 4 hours Ipx7 Level Music Play: 12 Hours TWS Function Dual Speaker: 31W Bluetooth Transmission Distance : 8 ~ 12 M