Used for 3 outputs foot races, earphones perfectly fulfill their role. I had trouble finding suitable earphones me. They either fell or it hurt my ears after 45 minutes of jogging. There, nothing to say, it holds and I have a lot.
Sound level, sound is OK but not amazing. This is against a part of the qualities of these headphones: external noise can be heard perfectly without not hear the music. Ideal for preventable cyclists who come behind us.