Walker"s Game Ear Alpha 360 Muffs have four wind-resistant, high-frequency, stereo microphones for precise sound directionality. All creatures great and small can be heard at 50db, nine times the power of normal hearing. Sound-activated compression reduces loud sounds, like muzzle blasts, to safe levels for a noise reduction rating of 24dB. Features include two independent volume controls for true stereo sound, antimicrobial ear pads and NXT Camo finish.