The razor x-trm 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: 23 dBQuantity: 1Style: Over the HeadBattery: AAAMaterial: Polymer