The innovative Plantronics H171N
DuoPro convertible headset offers all day comfort and best-in-class sound
quality. The H171N DuoPro can be worn as over-the-ear style (H151), a headband
style headset (H161), or behind the head style if used with the behind
the neck headband (H181). The H171N features a noise-canceling microphone
to help eliminate unwanted backtground noise.