Stereo Bluetooth Headset with active noise canceling (ANC) for use with computer & mobile phones. Microsoft Teams Certified Version - Certified for use with Microsoft Teams and compatible with other leading collaboration and voice platforms. Box Is Opened but Otherwise New Discontinued Headphones! Ideal For Professionals working in a distracting environment at home or in the office. Convenient desktop charging - soft leatherette ear cushions for all-day comfort. Audio Performance Active noise canceling (ANC) allows you to focus on your caller and not your background noise. Three noise-canceling microphones allow the far end callers to hear you and not your environment. ‎1 Lithium Metal batteries required. (included)