The sound quality is clear crisp, great bass, mic quality is impressive and it has excellent noise cancelling. Beim Vifa ist das anders, bei mir zumindest. These are great and comfortable sandals. However, after walking in them for over an hour they were not comfortable to me. Oh, and this camo pair are awesome! For the fit I guess I?m in between sizes because one size is too large and the other is too small I will just have to deal with that. I posted a picture so you can see how it fits a me. Everything bled in when I was using the silicone tips so I didnt even use that feature. Once out the connection was automatic to my Huawei P40 Pro. I am gonna have to return because I can?t even wear them.