Plantronics  H51N Supra Monaural Headset with Noise Cancelling Microphone
Noise Cancelling Supra Monoral- Monauralover-the-head headset- Quick disconnect (requires PL-M22 or PL-P10)- Covers one ear- Flexible earpiece- Clothing clip - Adjustable headband- Noise canceling microphone- Black andgrayADDITIONAL/REPLACEMENT PARTS:PL-10778-00: Cord clip kitPL-15729-05: Ear cushion kitPL-17590-03: Headband assyPL-17876-02: Headband stiffener kitPL-21846-03: Extension cordPL-24316-01: Windscreen kitPL-43220-01: Clothing clipPL-45673-01: 10' Flat cablePL-40705-01: Value pack (Supra NC H51N H61N) PL-61871-01: Ear cushion