The sound that emerges is bad, locked up, not really clear, especially low.
It works can be good for people who speak loudly. Unless a microphone 5 cm of my mouth, I hope even when a normal volume even talking quietly.
After an afternoon setting attempts, there is nothing to do.
And suddenly this helmet is half good. And it sucks to pay as much as an essential component is rotten.
In short, I advise not account for those who have certainty on the micro part.