It charges conveniently through a USB-C connection, making sure that you can easily recharge it even on the move. MP3 player - Just store your favourite music being an MP3 over a memory card (TF, Micro SD) and make use of the loudspeaker like a jukebox or, alternatively, with https://www.bluetoothspeaker.top/outdoor-ipx7-waterproof-speaker-box-hifi-bluetooths-party-speaker/