WUW R-29 Bluetooth Speaker V4.2working distance: Up to 10mVoltage: DC 5VBattery Charge time: 2-3HS/N ratio: >95dbFrequency Response: 260Hz-16HzDimension 82(H)*112(W)*40(D)mmNet weight: 190g SPEAKER Support Bluetooth & Wireless transmission. 2.Built-in Microphone, enjoying hand-free