Enjoy a perfect acoustic seal and enhance your hearing up to five times normal using these Power Muffs. They incorporate advanced technology for unsurpassed sound quality, excellent speech clarity, superior hearing protection and sound enhancement. Noise reduction rating of 24db helps protect your hearing from loud sounds using electronic sound-activated compression circuitry. If hearing enhancement is what you’re looking for, set it to amplify sound up to five-times your normal hearing. Each of the two wind-resistant, high-frequency microphones has its own volume control. Concave cheek relief won’t interfere when shouldering a gun. Powered by two AA batteries (included).