Get ready for thick. throbbing erections with an easy press of a button! This Classix® Auto-Vac Power Pump boasts a hands-free automated motor that powerfully enlarges girth and expands length. The ultra-stretchy Elite Silicone donut creates a comfortable air-tight seal as it snugly encircles your shaft. With the simple press of a button. the vacuum suction teases your penis to a long-lasting. rock-hard erection. The clear vacuum cylinder allows you to see your growth! The thick. heavy grade acrylic tube is marked with metric graduations to measure your results. Once you`ve reached your desired size. simply press the quick-release button under the power button to instantly relieve pressure. Or. press and release the quick-release button intermittently to enjoy milking sensations that feel just like oral sex!Dimensions:Package Depth: 3.25 in.Package Width: 3.25 in.Package Height: 13.75 in.