Microsoft Certified Teams Bluetooth Wireless Headset • for office worker and hybrid worker Headset part: • Color: Black • Weights: 92g • All-day-wearing comfort • 3 mic beamforming noise cancellation • Talk time: (up to) 30h • Bluetooth：5.2 • 35 mm custom speakers • Support Yealink Connect APP and Yealink USB Connect Manager • Enhanced Busy Light Package List • USB 2.0 Cable(USB-C to USB-C) • BHM701 Headset • Carrying Case • BT51 C Dongle(with A Adapter) • Quick Start Guide Connection: • Mobile phone • PC