This high-tech penis pump allows you to keep track of the pressure within the cylinder, battery life, and length of your pumping session! Achieve a bigger, harder, and more sensitive boner!Slide into the silicone sleeve using a little water-based lube for sleekness. The tight opening will create a seal around your penis so that pressure can build within. The cylinder is textured for a firm grasp, clear so that you can watch yourself grow, and marked with measurements so that you can track your progress!Explore 4 levels of suction, finding your perfect amount of pressure with the plus and minus buttons. The LED display will tell you the level of internal pressure you are vacuuming your penis with, as well as the battery life and session duration. When you have had enough, a pressure release valve button will release the pressure so that you can play with your erection!Measurements: 11.5 inches in total length, 8 inches insertable cylinder depth, 2.35 inches in diameter. Silicone opening is .75 inches in diameter, unstretched. Hose is 8.75 inches in length.Material: ABS, SiliconeColor: ClearNote: Charges via USB