We search for how isolated the volume controls are. In other text, when your fingers search for the buttons, how many do they find? If it’s two, that’s easy. 3 is similar, just with a play/pause button in the middle. But more than that, we have to recollect where https://www.bluetoothspeaker.top/ipx4-waterproof-subwoofer-bluetooth-wireless-outdoor-portable-bluetooth-speakers/