The Original Bottle Popper, Automatic Beer Bottle Opener, Navy Midshipmen Automatic Beer Botle opener twists cap off effortlessly while cap is caught at the bottom by a magnet! Works on Twist-offs, Crown caps or fixed caps. Great Portable bottle opener for Tailgating, Barbecues and Indoor Bar use. Great for people who suffer from repetitive motion disorder or other wrist disorders. Ingenious invention that will be the talk of the Party! Push Down spring loaded mechanism opens and releases effortlessly in on push down motion.