Yealink WH63 Convertible Microsoft Certified DECT Wireless Portable Headset. With Yealink Acoustic Shield technology, the Teams headsets could well filter out background noise by 2x microphones while you are on a call,which provides a HD voice quality for your listeners, and ensures distraction-free conversation.Designed with full compatibility, WH63 conference headset perfectly matches your UC platform and device, delivering a consistent call experience, better communication quality, and lower IT costs. Designed with full compatibility, WH63 conference headset perfectly matches your UC platform and device, delivering a consistent call experience, better communication quality, and lower IT costs.