The Walkers Razor Slim Electronic Muff features advanced sound-activated compression technology, effectively reducing harmful noises like gunshots and loud machinery to safe levels, while still allowing you to hear important ambient sounds. With a noise reduction rating (NRR) of 23 dB, these earmuffs provide exceptional protection in even the loudest environments, ensuring your hearing stays safeguarded. Say goodbye to muffled sounds and distorted frequencies. The built-in high-definition speakers of the Razor Slim Electronic Muff deliver clear, amplified audio directly to your ears. Whether you're at the range, communicating with your hunting buddy, or at the job site, you can enjoy crisp, natural sound quality without compromising your safety.