Plug and play with adapter GoPro, al eye nice quality, installed in the helmet without much precaution and rendering is perfect! The voice is perfectly audible, no breath due to wind up a 130km / h (not tested beyond, supermotard I have zero protection against wind and yet RAS), just enough to be well with me on the bike and not give the impression of a recorded voice after the action. The sound of the bike is also very well made, short but happiness! For 20 plus c is super affordable, when I see some in with microphones 100 for a result is hard as well, I feel sorry for them!