Yealink TEAMS-BH76-CH-BL Teams Certified Bluetooth Wireless Stereo Headset, Black, ANC, USB-A, Includes Charging Stand, Rectractable Microphone, 35 hours battery life Yealink's BH76 Bluetooth Wireless Business Headset has a stylish appearance and delivers exceptional audio quality. It has an innovative retractable microphone arm and 4 levels of active noise cancellation (ANC), as well as Yealink's Acoustic Shield Technology. It allows users to transform any place into an office.