An external audio jack lets the earmuff do double duty as stereo headphones when connected to an MP3 player or other audio source. i3.4351tvAztvAzH3" style="box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; height: 10451.8px; position: absolute; top: 0px; visibility: hidden; width: 1113.63px; z-index: -1;">.
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