Protect your hearing from loud noise with the Walkers Razor Slim Electronic Muff. These Razor thin muffs were engineered from the ground up with the goal of having the lowest possible profile without compromising the hearing protection and amplification properties of the muff. Delivering an impressive noise reduction rating (NRR) of 23dB the Razor series are sure to protect your hearing without interfering. The Razor series also feature Walkers new comfort fit headband for all day shooting with a slim and compact folding design that takes up less space in your bag. Ergonomic Design The Walkers Razor Slim Electronic Muffs feature an on/off and volume knob with raised ridges so you can adjust even while wearing gloves. On the front of each muff is omni-directional mics to assure that you don t miss anything combined with high definition speakers to deliver crisp clear audio. Finally the electronic muff features a 3.5mm audio input jack for use with iPods MP3 players and handheld radios.