Enhance your hearing! The Walker's Rechargeable Ultra Ear delivers clear, digitally amplified sound directly into your ear canal. Now you can easily hear snapping twigs, crashing brush, and other telltale signs that whitetails and other wildlife are nearby. When you're ready to take your shot, it automatically muffles the loud blast to help protect your hearing. Plus, it's equipped with a rechargeable battery that boasts a big 48-hour battery life.