The circular button with the Lora DiCarlo logo on the front of Osé is the power button. By pressing and holding for 3 seconds you can turn Osé ON/OFF. The long, narrow button on the bottom of Osé adjusts the intensity of the clitoral stimulation. The short, narrow button adjusts the speed of the G-spot Massager. The small, round button (next to the G-spot speed button) allows you to choose between short and long strokes over your G-spot.