The best vibrating cock ring for couples. This cock ring is simply FABULOUS! All that you could both ever want from a cock ring. For Him: the small stretchy ring keeps you harder while the larger ring goes around your balls to make you last longer. For Her: enjoy the vibrations of the bullet for thrilling clitoral & vaginal stimulation. For Both: This waterproof vibrator sends powerful vibrations and pulsations through his shaft and unto her. This 7 function ring of multi-speed and pulsations is completely waterproof and easily controlled with the push of a button at the base. Comes with FREE watch batteries to start and 3 extra. Here's how it works: The larger ring loops around balls, offering stimulation and constricting some blood flow, causing erection to stay harder longer. The smaller ring fits over base of the penis, making it stay harder and has soft tips to stimulate her vagina.