Bi-directional ECM noise-canceling mic Answer/end calls and adjust the volume with in-line controls. The volume-up button is built higher than the others, allowing you to control the call without looking away from your work Certified for Skype for Business and Cisco Jabber A flat and flexible cable resists tangles so you never get tied up on a call Compatible with other popular calling platforms such as Blue Jeans, BroadSoft, Google Voice, GoToMeeting, Microsoft Teams, Vidyo, and Zoom