Walkers Razor Digital X-TRM Headband Ear Muff w/2 Microphones Flat Dark Earth. 02 seconds. SAC is a special electronic circuitry that will compress gun shots and other loud noises down to a safe level without completely shutting the noise off. This allows you to hear range commands or communicate with your hunting partners even when shots are being fired around you. Your hearing cannot be replaced so make sure you pick up a set of Walker's Razor Electronic Earmuffs for your next trip to the woods or range. Includes 2 AAA batteries. Specifications for Walkers Razor Digital X-TRM Headband Ear Muff w/2 Microphones: Manufacturer: Walkers Color: Flat Dark Earth Fabric/Material: Polymer NRR: 21 dB Quantity: 1 Size: One Size Battery Type: AAA Battery Quantity: 2 Battery Life: 350 hours Age Group: Adults Features of Walkers Razor Digital X-TRM Headband Ear Muff w/2 Microphones Ultra low-profile design Cool mesh headband Comfort gel earpads Rubberized coating Two hi gain omni directional microphones Audio input jack Low noise / frequency tuned for natural sound clarity Volume control Compact folding design Comfort headband w/ metal wire frame Sound dampening composite housing Sound activated compression recessed volume control knob external battery door Package Contents: Walkers Razor Digital X-TRM Headband Ear Muff w/2 Microphones 2 AAA Batteries Walkers GWP-XRSEM-FDE: Razor Digital X-TRM Headband Ear Muff w/2 Microphones FDE