It was created in order to give high-quality sound for small Areas. The speaker system functions as an independent two-way speaker which connects specifically with other devices using Bluetooth 4.0 technology. MP3 player - Only store your favourite music being an MP3 over a memory card (TF, Micro SD) https://www.bluetoothspeaker.top/wholesale-waterproof-bluetooth-speaker-car-clip-bluetooth-speaker/