The Executive Oro Simulator is a soft and powerful oral simulator that has incredible vibrating and sucking action. It's easy to use. whether working the hand pump or turning up the powerful vibrations. Plus. the center shaft has erotic textured ticklers for that added oral sensation. Overall length is 8' with an outside diameter of 2 1/2'. Uses 2 AA size batteries. not included. This is all that a man could want in a simulator!