Yealink UH34 Mono Teams headset is Microsoft Teams Certified with call control features. This USB headset runs right out of box and provides the user with Yealink optimized audio quality. This headset is the perfect match for users who spend most of their day on calls and want to focus. Call control features supported on this headset when used with teams allow the user to answer/end/reject and hold a call, turn the volume up and down, mute the boom microphone and even redial last call.