Otto V4-10413, ClearTRAK. Over-the-head heavy-duty headset with certified noise reduction rating(NRR) of 24dB. Built with an extreme noise-canceling microphone (3dB-Standard) (19dB-ClearTrak). PTT switch located on the earcup. Flexible, heavy-duty coil cord. For TK272G, TK372G, TK3130, TK3131, TK260G, TK360G, TK270G, TK370G, TK3100, TK2160, TK3160, TK3101, TK2200, TK3200. List price $377.92
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