my bluetooth headphone has a physical mute button. but it's a button, not a switch, so when you press the button, it will announce to you that "mic is off" and then start to beep every 5s to keep reminding you that the mic is off, until you press the button again to unmute it.

but that only works when the device (computer) actually requests mic data. e.g. if I just connect it to listen to music, press the button will not do anything. if I'm in a google meet meeting and I muted myself in google meet, press the button will also do nothing.

but if I'm in a zoom meeting (via browser, I don't allow their apps anywhere near me), even if I have myself muted in zoom, press the button will still have the announcement, which means even if I'm "muted" on zoom, zoom still keeps requesting my mic data.