Please make sure that you are posting in the form of a question. Please enter a question. The BigO 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! Sue Johanson.