Ultra-lightweight hearing enhancement and protection, all in one set of muffs. Walker's Alpha Power Muffs incorporate advanced technology to give you unsurpassed sound quality, excellent speech clarity, superior hearing protection, and sound enhancement. With a Noise Reduction Rating of 24 dB, the Alpha Power Muffs help protect your hearing from sudden or sustained loud sounds. The electronic Sound Activated Compression circuitry provides an additional layer of protection. The Alpha Power Muffs also amplify sound up to 5X normal and use two microphones to provide improved sound triangulation.