The BigO Vibrating Ring is the big brother to the original vibrating ring with a multi-function motor that pulsates and vibrates and a thicker erection band that keeps him hard and ready to go. When switched to pulsation mode the 9-function stimulation sensation teases and tickles leaving her tingling - and with a quick switch bring her home with the steady powerful vibration that The Screaming O is famous for! Includes 3 AG10 Batteries. Battery life 60+ minutes. Body safe SEBS.