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, silicone Color: Clear Note: Charges via USB