This easy-to-use automatic pump helps you reach your maximum potential, and features a unique vibrating head stimulator that moves along as you grow. Designed for comfort and pleasure, it creates an airtight seal around the penis using suction to enhance blood flow and pressure. This encourages growth in length and girth. The EZ-grip trigger has a quick release valve to let you release the pressure immediately, and the multi-speed vibrating action is adjustable for maximum pleasure. Req. 2 "AA" batteries (sold separately). Item is not waterproof. ABS. 7 1/2"L x 2 3/4"W.