Perfectly compatible with Yealink Phones Noise-Canceling Microphone Unparallel Audio Experience All-day-ease Yealink YHS36 is the over-the-head style headset which is made for office worker, SOHO, or call center staff. It supports QD (Quick Disconnect) feature and it is compliant with the full range of Yealink enterprise IP phones. The Yealink YHS36, available in monaural (YHS36 Mono) and binaural (YHS36 Dual), is a professional analog wired headset to facilitate the conversations in ways that your concentration zone and focus is easily got in and the listening fatigue is reduced as well. Its ergonomic design and soft leather ear cushions make YHS36 comfortable enough for long all-day use. Perfectly compatible with Yealink Phones Runs right out of box, a QD to RJ9 plug-and-play setup makes the connectivity to Yealink Desk phones. Perfect match with Yealink desk phones give you optimized audio quality and more enhanced functions. Noise-Canceling Microphone The noise-canceling microphone allows for the most reduction of outside noise, so the listeners can focus more on the desired sound at hand, the nearby talkers are protected with most call privacy as well. Unparallel Audio Experience Made for calls, this headset is kitted out with wideband HD audio technology and passive noise cancellation that ensures a richer and clearer conversations, eliminates background noises as well. All-day-ease The over-the-head style, ultra-lightweight materials, and bio-mimetic protein-based leather ear cushions are easy on your head and ears. Its ergonomic design makes YHS36 comfortable enough for long conference calls and all day use.