Big-Boy vibrating prostate stimulator by the trendy English Rocks-Off label. Cleverly designed dual stimulator with slightly curved top for perfect prostate stimulation. The studs on the other end stimulate the perinaeum or scrotum. With bulges along the shaft for additional stimulation during penetration. Because of its size it's a great toy for advanced users. Requires one 1.5 volt N-size battery (included).