First big advantage, that an in-ear headphones that superbly isolated from the outside world; ideal for transport.
Comfort entirely correct, they are not too heavy; little flat, I find it a bit long wire, but hey, you only have to hide it in the bag.
Red quite friendly.
In sound, very good bass and clear sound - disco atmosphere in my ears.
Buttons to select the song and sound.
In summary a very good helmet that I recommend without hesitation.
