
The H171N is the convertible model with noise-canceling microphone. New ergonomic innovations offer unsurpassed comfort, and the patent-pending anti-twist boom ensures perfect microphone placement.Can be worn on either earUnique double T-pad headband distributed weight evenly so there is never a speaker pad pressing on your earAdjustable clothing clip for cordRequires Plantronics amplifier to connect to phoneBoomDuoProDuoPro H171N HeadsetH171NHeadsetMonauralMonoNoise CancellingOver-the-earOver-the-headPlantronicsPlantronics, IncQuick DisconnectSemi-openWiredhttp://www.plantronics.com
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