Digital Pump with ConnectorWatch the numbers rise on the display screen while you become engorged and sensitive! This digital pump connects to Size Matters cylinders for nipple, penis, vulva pumping and more! It has just two buttons for ease of use: the 'Start Stop' button creates a vacuum within the cylinder or cup, increasing suction at a steady rate. Once you've had enough, you can either press 'Stop' and disconnect the hose from the attachment, leaving the pressure within