This powerful, motorised penis pump creates a super-strong vacuum inside the chamber. It is simple to use and only requires 3 x AAA battery's. Included with this product is a sexual enhancement ring that helps to prolong ejaculation. The ring creates a tight squeeze prolonging ejaculation and helping to maintain your erection. The Auto-VAC Power Pump is made from ABS plastic and Thermoplastic Rubber.When you're done, detach the tube from the hose and restore your pump to like-new quality with Sparkle Toy Cleaner and warm water.