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. - Hands-free automated motor that powerfully enlarges girth and expands length - The clear vacuum cylinder allows you to see your growth. - Once you've reached your desired size, simply press the quick-release button under the power button to instantly relieve pressure.