Performance VX1 is a high end gentlemen`s enhancement system that consists of a motorized pump vacuum chamber, an airtight seal and a penis ring. Precision engineered vacuum chamber is clear for viewing progress measuring 2.5 inches wide, 11.5 inches in total length and accommodating 8 inches in penis length. The motorized pump provides penis enlarging suction and the pressure release valve allows comfortable removal. Bonus cock ring helps maintain erection and elongate each VX1 experience. 3 AAA batteries required; not included. Last but not least, we have included a detailed User Safety Manual. Lab Tested Body Safe. Silicone, Water Based, Hybrid Lube Safe.MOTORIZED - High Capacity Pump Motor Puts You In ControlMEASURE - Clearly Etched Measurement MarkingsCONVENIENT - Advanced One-Touch Operation. Push To Pump. Push To Release PressureINCLUDES - 1 Stay Hard Cock Ring And Detailed User Safety ManualSPECS - Acrylic Cylinder Is 8L x Inner Width 2.25, Outer Width 2.5. Overall Length Is 11.5