Our most advanced gentlemen?s enhancement system offers the results you deserve plus vibration for extra stimulation. Performance VX4 consists of a 10? vacuum chamber. trigger pump. pressure release valve. a realistic seal and an elastomer penis ring. The precision engineered vacuum chamber is clear for viewing your progress. Adjust the intensity precisely with the two-finger trigger pump control and disengage with the quick release valve.- 10 inch chamber length- Multi speed vibrations- Requires 2AA batteries; not includedLength: 10 inchesInsertable Length: 9.5 inchesWidth: 3 inchesCircumference: 9.5 inchesProduct Weight (without package): 17.2 ounces