These Walker's Razor slim low-profile electronic earmuffs feature noise reduction technology up to 23db. They're designed with an ultra-thin profile, and they fold for added space-saving. These earmuffs are finished in a Flat Dark Earth color, and they use two AAA batteries. An audio jack input allows you to listen to your own music or other audio files through the earmuffs. The headband is made with a metallic frame, and it's adjustable for all head sizes. A rubber coating protects the earmuffs from moisture and dust.