The "Big O" is the worlds only nine speed auto-changeable vibrating ring. It's what everyone really wants, the big orgasm. The "Big O" is designed with a specially enhanced silicone gel ring. It stimulates the female clitoris with extended ticklers for reaching orgasm, and also effectively prolongs the length and firmness of the male erection. The "Big O" is the state-of-the-art in adult, toys increasing pleasure for both. Multiple use, replaceable batteries, waterproof. Duration of intense vibrations: 80 minutes.