【Dual Connections of USB and Bluetooth】Connect to two devices simultaneously — use Bluetooth for smartphones/tablets, and include USB-A cable for computers. Effortlessly switch calls or audio between devices with a single tap—no more swapping headsets or missing important notifications. Perfect computer headset with microphone for hybrid work. 【Microsoft Teams Certified】Officially certified for crystal-clear Microsoft Teams integration. Work headset with mic engineered for professional conference calls, remote meetings, and flawless VoIP communication. 【Noise-Cancelling Microphone】The 320° rotatable boom mic blocks keyboard clicks, chatter, and background noise. Headset with microphone for PC that ensures your voice dominates — sound professional anywhere. 【All-Day Comfort】Protein Leather ear cushions, adjustable headband design avoids fatigue. Forget you’re wearing it! Ideal PC headset with mic for marathon meetings. 【Smart BusyLight & One-Touch Control】360° red LED busylight auto-activate during calls to signal "BUSY". Intuitive controls: mute, volume, device switching, and dedicated Teams button. True headset with mic built for productivity. Compatibility List for Voip Phone Yealink T5 Series Phones: T53/T53W/T54W/T57W/T57A/T58A/A with Camera/VP59(V86 or higher) Yealink T4 Series Phones: T41S/ T42S/T46S/T48S/T42U/T43U/T46U/T48U Yealink Teams Phone: T55A/T58 A/VP59/MP54/MP56/MP58/MP59/MP60 Yealink Skype for Business phone: T55A/T56A/T58A for Poly Phone: VVX250/VVX350/VVX450/VVX401/VVX411/VVX501 for SNOM Phone: D385/D735/D765