The Screaming O Sport combines high performance vibration with perfect form to give couples the ultimate in sex positive fitness. Enjoy the intense power of a deep, rumbling motor and the secure fit of a Flex Ring for more satisfying sex with optimal results. Made of 100% lab tested body safe materials with a completely waterproof design, the Sport is the perfect addition to your healthy sex life and intimate routine. <br /><br />Features super flex vibrating ring for sex positive fitness. Rotating bullet adjusts for perfect form in every sex position. High performance motor rumbles for deeper results. Stretchy SEBS material fits most sizes with less constriction. Waterproof. Additional information latex free and phthalate free. One size fits most. Batteries included. Extra batteries included. Wireless. Reusable. Battery type used replaceable AG13. Battery life 40 plus minutes.