My first impression was good but it became even better after changing ends. Therefore: .3 Tips available sizes that stay put in the ears and make the most impeccable sound, neither too strong nor too weak, with low and all the little sounds that can go unnoticed on other headphones. .Des Play buttons - Previous Next well placed on the cord .and also the possibility, if one wishes, to cut off completely from the outside world. .Petit Bonus; aesthetically, it throws. just for that i hope not to change mobile now.