Maximize your pleasure tool with the Optimum Series Executive Automatic Smart Pump, a massive penis pump made for bigger and better results with every use. Increase endurance, improve stamina and amplify your rod with 3 unique enhancement exercise modes. The extra-large smart pump has easy-touch controls and a quick air release button for customizable pumping. While the thick open-end sleeve and tight, nubbed chamber give you sinful stroking pleasure with or without the pump. Never settle for less when it comes to the size of your pleasure with the Optimum Series. The cylindrical pump and thick, durable sleeve are designed to create the perfect seal and powerful suction at the touch of a button. Once you've reached your peak pump, use the quick air release to decrease suction or release seal. When used regularly, this powerful pumper can increase stamina, enhance overall size and amplify sensation. Recharge the premium pump in 90 minutes with the provided USB charging cable to enjoy up to 12 hours of total run time. To track progress, use the incremental measurement marks on the cylinder shaft.