Get ready for thick, throbbing erections at the push of a button! This Classix Auto-Vac Power Pump features an automatic motor that powerfully increases both girth and length. The ultra-elastic elite silicone donut ensures a comfortable, airtight seal while snugly enclosing your shaft. With just the push of a button, your penis is stimulated to achieve a long-lasting, rock-hard erection through vacuum suction.