Intense sensations! Revolutionary technology creates 3-speeds of rolling motion up and down with reverse rotation of the smooth cushioned shaft, while the 3-speed vibrating butterfly resonates with power. Waterproof, soft touch push button controls, LED lights, and an EZ load battery pack. Patent pending. Total length is 10.25 inches with an insertable length of 5.25 inches. Requires 4 AA batteries not included.