Noise Cancellation Microphone and Mic Mute Function The bluetooth headsets with microphone filters up to 99.6% of background noises, and still maintain crystal clear calls wherever you are. The mute button on the side of the office headset can easily mute/unmute microphone during the call, which will not let you press mistakenly and avoid embarrassment. (Tip: The microphone mute works with calls from cell phones and PC-based applications, such as Microsoft Teams, Skype.) Long Battery Life & Exclusive Charging BaseVonztek wireless headset is equipped with a 500mAh battery, which provides over 45 hours working time and 200 hours standby time after fully charged. Fully charged only need about 3.5 hours. Besides, the wireless headset with microphone for pc comes with a charging base, you can use it to charge the headset or use charging cable to charge the headset. The connectivity range is up to 33ft/10m. In an open area, up to 130feet/40m.