There are two speeds of vibration to choose from, depending on your mood and position on the pleasure scale, and the rotating beads in the shaft can be reversed, switching up sensation. The controls are within easy reach on the base, they're glow-in-the-dark to let you see your way. Use a good water or silicone based lube if needed to keep the phthalate free, the slick elastomer in great shape. Takes 4 AAA batteries.