The Screaming O™ Vibrating Ring is the only vibrating ring with unique pleasure knobs to vibrate the penis as well as provide direct, dynamic stimulation to the woman that will make her toes curl while having the best orgasms of her life! Don't worry about the battery dying during climax, with The Screaming O™ Vibrating Ring's extra long battery life, your encounters are sure to last, and last..and last for over 30 minutes