Muting your product
You can quickly mute the sound playing through your product. This is useful, for example, if you need to switch your focus to another sound around you.
Turn on voice prompts to hear when the headphones are muted
Please note: You need to have voice prompts on to hear when the headset is muted. See Enabling or disabling voice prompts.
Also, this does not mute the microphone on the source device, only the headset. Therefore you will not see the microphone muted on the source device.