The Naturally Yours Rumba will let your pleasure flourish! Experience the multispeed vibrations, controlled via an easy twist dial and the Flexi Shaft? technology, a flexible, realistic shaft that bends with your body. Rumba's motor is positioned near the tip for deep, satisfying sensations. Made of premium TPE, Rumba is body safe, fully waterproof, and easy to clean. Requires 2 AAA batteries (not included).