These were recommended to me by a person who is knowledgeable on sound quality/headphones. Esta disenada para uso portatil, ya sea durante recorridos , acampar/viajes, o solo como una bocinita para la regadera. To collect everything and get platinum trophy it can take upwards to 40 hours. bought these attachments to accompany the home gym pictured (attachments not in the picture, just showing what I bought this set for) each piece is solid and perfect for each of the exercises theyre designed for. I purchased these because I am not spending $200+ for ear buds . It is just that "orthopedic" look. I used it for less than 30mins, it hurts my ear, the high pitch is just way too much, especially the dance music. It was an easy fix though. Be sure to tune in. I have tried going through Settings and getting them permission to answer phone calls but I still can?t figure out how to do that.