Noise-isolating design for ideal concentration: Keeps out external sounds for better work collaboration and listening experience in any environment Get more productive: Busy light automatically turns on during a call to let others know when you're busy – Can be activated manually to signal no disturbance wished Be heard and understood: 2 microphones, enhanced digital chipset and the boom arm offer you the best possible audio quality Microsoft Teams certified:  Dedicated Teams button and meets MS Teams open office requirements