Then occur the inputs, which are very important in case you don’t always system on using Bluetooth. The popular inputs Bluetooth speakers include are AUX, and USB. There will even be a charging port, most likely a USB C charging input. USB C is really standard and offers two.5 https://www.bluetoothspeaker.top/usb-tf-aux-strong-bass-home-theater-subwoofer-party-stereo-wireless-bluetooth-speaker/