Good little helmet, aesthetically nice, very soft, do not hurt the ears even if we keep the hours, height adjustable, watch great size if you want to use in a child it may be too large (c This is the case for my 8 year old daughter who has a small head) the sound is adjustable via a dial incorporated on the wire. Unfortunately, I did not test the microphone because no use to me. The sound is good (not sizzling, identical on each ear, neither too severe nor too high) but I'm not a connoisseur! Very good value for money.