Todo muy profesional y muy rápido para mí. Se merecen 5 estrellas con actos como este, en el que todo ha ido súper rápido.

This is very pleasant and very private.

They serve their purpose; if you're outside, the sound is good, but not loud. I haven't tested the hands-free feature. You should consider that, given the price, they won't have the sound quality of a Bose. These glasses fulfill their function, much better than the other version sold, the one without buttons that has a drawn fingerprint (those barely have any sound).

Sound quality is very good, product is well-made.