The speaker works by using CSR 4.0 Bluetooth for high quality music streaming and you can connect the speaker to your smartphone or tablet devices. The speaker arrives with a built-in rechargeable 3600mAh battery and charges by means of the micro USB port. The speaker also arrive with a https://www.bluetoothspeaker.top/subwoofer-dj-loudspeaker-outdoor-bass-high-quality-loud-speaker/