Designed to enhance intimate moments between couples, the Screaming O DoubleO 8 Couples Vibrating Cock Ring has a two-ring design. Slip the larger ring around his testicles and the smaller over the shaft of the penis. A vertical laying multi-speed bullet vibrator provides maximum contact with the clitoris to help her build to orgasm as your bodies move together. The Screaming O DoubleO 8 Couples Vibrating Cock Ring is waterproof and comes with batteries included.