Keep track of pressure, battery, and session length on the LED screen! This automatic penis pump will give you a massive erection that bulges with rock-hard sensitivity! The cylinder is textured on the outside to provide a secure grip, with an optional silicone sleeve at the base for a tight seal around your shaft. Use the plus and minus buttons to discover 4 levels of suction. Track your gains with the measurements along the side, while the LED display shows you how much pressure is within, how much battery life is left, and how long your session has lasted. When you've had enough, the release valve will quickly free your engorged dick from the pump for you to play with it! 4 Level Power Suction Penis Pump With Built-in Display specifications: 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 Sleeve is not compatible with silicone lubricant Silicone sleeve can be removed Textured cylinder Note: Charges via USB