It has a power / pairing button on the right flanked by volume buttons. (indianexpress.com)
From left to right, the speaker features a power button with an LED to indicate battery status, a Bluetooth pairing button and a switch for auxiliary mode. (techradar.com)
My tip was to always pair the button down with a slimmer fitting sweater so that the shape would be maintained regardless of whatever was underneath. (preppypanache.com)