Introducing the World's First Automatic, Vibrating Powerful Head Stimulator that moves as you grow... the Accomodator Personal Exercise Pump! This personal exercise pump has a multi-speed control, a removable cylinder for easy cleaning, a flexible non-crimp hose, and EZ-grip trigger pump, a flanged base cylinder for a secure fit, and a spring-loaded head stimulator that moves with you as you grow for continuous stimulation. The Accomodator penis pump measures 13 1/2 " and has a cylinder length of 8.25". Takes 2 AA batteries, sold separately.