Bump N Grind is just what a girl needs for a special night. Its texture helps intensify the vibrations produced by the powerful and quiet motor. Twist the dial on the bottom to control the speed of the vibrations. It is also waterproof so you can take it in the shower with you. Vibrator requires 2 AAA batteries, not included. Length 6.25 inches. Insertable length 5.5 inches. Width 1 inch. Circumference 3.75 inches. From Blush Novelties.