| http://www.w3.org/ns/prov#value | - Features include a ventilated inner headband to minimize pressure on the head, durable outer headband to withstand abuse, snap-in ear cushions, directional stereo microphones, Quick-Click headband height adjustment and an NRR of 22 dB. This unit also comes equipped with an audio input jack and cord for your MP3 player and other audio devices for listening off the field.
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