I wonder who got this idea and who tested it out, 'cause this is far beyond the ordinary vibrator. No matter which way you twist and turn there is part of a vibrator touching your most erotic parts. What more could you ask for? The pink jelly vibe satisfies while the thumb teases those sensitive areas. The vibrations alone would excite and please you. But added to that you get this extra "thumb" and the combination will drive you wild! Requires 2 AA batteries (not included).