the sound is very good, the quality of the connection is very good too.
the way to connect the helmet every time you want to use is not practical because
1 / you must have it in his hands to do (not the head)
2 / the sound level to zero after the connection => you increase the volume
3 / put it on the head to listen if any sound
4 / You need to settle the reprise sound because buttons are difficult to use without seeing them.
5 / You put the helmet
5 steps if everything worked at once (rare).
I recommend headphones (other brands) have a knob that you feel with your fingers and it is easy to rotate without removing the headphones
