Maintain call quality through long shifts with a headset designed for professional UC environments. The Poly Savi 8420 Stereo -M D1 HS uses DECT wireless connectivity in the 1,920 to 1,930 MHz band to support stable voice performance in dense office settings where Bluetooth-only headsets can fall short. Its stereo, dual-ear design helps reduce distraction and keeps speech centered for agents, supervisors, and knowledge workers who spend the day on calls. Microsoft Teams certification makes deployment straightforward for organizations standardizing on Teams for collaboration and calling. The headset is built for office use, where consistent audio, comfortable wear, and predictable wireless behavior matter more than consumer features. For procurement teams, that means a model positioned for professional communications rather than a lower-cost headset that may compromise range, call clarity, or platform alignment. This is the kind of headset that earns its place in a fleet: purpose-built for voice, ready for UC environments, and suited to teams that need reliable performance without constant re-pairing or audio drift. When call volume is high and downtime is expensive, the Savi 8420 helps keep conversations moving.