The Poly Savi 8210-M (207322-01) is an enterprise-grade monaural wireless DECT headset certified for Microsoft Teams and built for professionals managing calls across PC, desk phone, and mobile. A single all-in-one base station connects to all three devices - switch between them or merge any two onto the same call with one button press. DECT 6.0 wireless delivers secure, interference-free audio up to 590 feet line-of-sight (180 feet in a typical office), without competing with Wi-Fi. The noise-canceling boom microphone reduces background noise, while the Close Conversation Limiting feature (blocks nearby conversations from being picked up, configurable in Poly Lens) adds extra privacy in open offices and contact centers. SoundGuard Digital hearing protection keeps audio levels safe during extended wear. The lightweight on-ear design weighs just 115g and automatically conserves battery when near the base, delivering up to 13 hours of talk time on a single 3-hour charge. Up to four headsets can share one base for call training or group escalation. Certified for Microsoft Teams; compatible with Zoom, Skype for Business, and major UC platforms.