Ultra-Portable: WH64 Hybrid headset with lightweight DECT dongle and a drawstring bag, ideal for professionals on the go. Dect & Bluetooth dual mode supports seamless plug-and-play with multi-devices (PC/cellphone/landline). | 492 ft Longer Range: Advanced DECT tech delivers an impressive wireless range of 492 feet. DECT wireless headset have higher call security, greater anti-interference, and 2x deployment density of Bluetooth. | All-Day Life: A quick 1.5-hour charge provides up to 41 hrs of music playback and 26 hrs of talk time. The headset with mic for work can stay powered all day while traveling or working. | AI Noise Cancelling Headset: 3-Mic Noise Cancellation and 6 audio equalizers, backed by Acoustic Shield Tech 2.0, deliver crystal-clear calls. Office phone headset has call control, busylight and quick mute option (pull-up mic or mute button) for focused meetings. | Comfort & Support: Yealink teams headset- Ergonomic earcups are crafted with soft, breathable materials to minimize pressure. 2-year guarantee, our dedicated technical support and customer service teams ensure reliable assistance. Yealink Phone compatibility list:USB Phone:T4XS/T4XU/T53/T5XW/T58A; SBF Phone: T48S/T56A/T55A/T58A; Teams Phone: MP54/MP56/MP58;