Not only do they offer cutting-edge sound enhancement and hearing protection, Walker's X-TRM Razor Digital Earmuffs feature an extremely low-profile design with premium wearing comfort. This headset utilizes advanced digital circuity to provide enhanced clarity of desirable ambient sounds, such as voice, and animal movement, while offering active, dynamic suppression of undesirable noise, such as gun blasts or wind in the background. Hi-gain omni-directional microphones enhance sound directionality, so you can tell where game is approaching from. The sound activated compression reacts in fractions of a second, providing NRR 23 dB hearing protection.   Walker's X-TRM Razor Digital Earmuffs feature an improved ergonomic headband design that incorporates a rubberized coating, Cool Mesh headband, and Comfort Gel earpads for premium comfort during long afternoons at the range. This comfortable headband and compact ear cups are engineered to interfere minimally with gunstocks. An auto shut-off function can be set for 2, 4, or 6 hours. Runs on 2 AAA batteries (included).