Noise-Canceling Microphone *** DISCONTINUED - Replaced by H171N and 62800-01 Neckband *** The H181N behind-the-head configuration uses highly flexible plastic and soft rubber for the ear rests. The fit and stability of the neckband's design keeps the speaker pad from pressing on the ear for all-day wearing comfort. Sound quality: With forty years of experience creating headsets, Plantronics continues to push the envelope on audio quality. The DuoPro incorporates new advances in headset audio technology, including unique algorithms that optimize incoming sound for the particular qualities of human speech. Thanks to these advances, and DuoPro's first-of-its-kind ear piece design, you get a big-headset sound from a sleek, lightweight unit. And our innovative anti-twist noise-canceling boom ensures the microphone is always in the right place, preventing "voice fade" from a mis-positioned microphone. Durability: All Plantronics headsets are designed and tested for the ultimate in durability. When we set out to create the DuoPro, the Plantronics engineers were tasked with designing a headset that was sleek, elegant, and light but still rugged enough to be backed by a two-year warranty. Their design is stylish, small and unsurpassed in durability. Unique technical and design innovations: The DuoPro behind-the-head models are the first true behind-the-head telephone headsets suited to the demanding requirements of the Call Center and Office markets. Part: 62846-01