We try to look for how isolated the volume controls are. In other words and phrases, 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 center. But more than that, we https://www.bluetoothspeaker.top/colorful-light-bluetooth-speaker-with-function-of-supporting-to-play-usb-tf-card-fm/