BH76 Bluetooth stereo headset with ANC and retractable mic. Black, USB-C 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.