The razor x-trm digital muffs have a high performance digital circuit that delivers blazing fast reaction time ensuring optimum hearing protection.It also has active dynamic sound suppression hi-gain omnidirectional microphones recessed volume control knobs and superior clear digital sound.The muff utilizes a premium cooling headband gel filled ear pads and audio jack.Type: Electronic EarmuffColor: Black Ear Cups w/Black BandNrr: 21 dBQuantity: 1 PairStyle: Over the HeadBattery: AAAMaterial: Polymer