EPOS I SENNHEISER ADAPT 260 - Headset - on-ear - Bluetooth - wireless - USB - black - Certified for Microsoft Teams, Optimized for UC - for ADAPT 230, 231, 261. On-ear, double-sided Bluetooth headset with USB dongle, UC optimized, and Microsoft Teams certified. If work means calls via multiple devices, choose a wireless headset that fits with your dynamic working style in the hybrid workplace.