The speaker works by using CSR 4.0 Bluetooth for high quality music streaming and you will 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 come with a https://www.bluetoothspeaker.top/waterproof-tws-rgb-subwoof-speaker-portable-bluetooth-speaker/