Mute Function and Clear SoundOne press to mute, you can easily mute your voice during the call. Note M100 without Dongle can only mute on cell phones, if you want to mute on Skype or other calling software on PC. Please look at another item BH-M100 with Dongle. COMEXION headset also provides stable and clear sound when you make calls, and you could enjoy music with M100. Our Bluetooth headset is perfect for truck drivers, zooming and online meetings. Built in Noise Canceling MicrophoneOur wireless headset adopts unique adaptive environmental noise-canceling chipset technology, which can identify various background noises in the monitoring environment. Bluetooth headset with microphone can provide a quieter environment for listeners and improve the quality of communication even on the go. Extremely Comfortable To WearOur wireless headphones with microphone equipped with comfortable earmuffs and ultra soft protein leather for all-day comfort. 270° rotatable microphone can be