This automatic penis pump is easy-to-use, but packs a ton of power! Treat yourself or your partner to a penis that is swollen with sensitivity with this rechargeable, all-in-one pump!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 5 levels of suction, finding your perfect amount of pressure with the plus and minus buttons. The easy-to-read display will tell you how many pascals of internal pressure you are vacuuming your penis with. 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