The Ultimate Alpha Quad 360 Muff provides excellent protection and comfort and can be worn just about anywhere. The four hi-gain omnidirectional microphones pick up sound equally from all directions, which preserves and enhances your ability to hear. The Alpha Power's are NRR rated at 26dB which protects against damage to your hearing, and the sound-dampening composite housing keeps your ears comfortable. Features:Four Hi Gain Omni Directional MicrophonesLow Noise/Frequency tune for natural sound clarityIndependent volume controlCompact folding designComfort headband with metal wire frameSound dampening composite housingNRR 26Sound Activated Compression - 0.02 second reaction timeLow profile ear cupsRecessed volume knobsExternal battery doorOperates on 2 AAA batteries (included)More than just protection for your ears, the Walkers Ultimate Muff allows you to hear what is going on in your surroundings and conversations, but will protect your ears when a shot goes off.