The Big O 9 Speed Vibrating Cockring The Big O is the world's 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 Instructions on how to change batteries are provided within it's packaging. Click Here To Order