Long-life rechargeable battery with around fifty hours of cordless sound and USB port for charging devices 1 downside is that the volume can not be adjusted with the remote control, which might be inconvenient for some users. In addition, the speaker supports TWS mode, allowing you to pair two https://www.bluetoothspeaker.top/new-arrival-bluetooth-speaker-with-led-subwoofer-usb-communication-handsfree-wireless/