Then come the inputs, which are critical should you don’t always plan on making use of Bluetooth. The common inputs Bluetooth speakers include are AUX, and USB. There will also be a charging port, most likely a USB C charging input. USB C is pretty standard and offers two.5 https://www.bluetoothspeaker.top/3d-surround-party-gaming-wireless-subwoofer-speakers-bluetooth-professional-bass-speaker/