I want to point out that the build quality of these are excellent! Looks like factory built very well easy install would recommend to anyone Ordered size 9 and after 2 days they are perfect. It took me a minute to figure out how to assemble the head strap. Assorbe 0,03 mA anche da spenta, rischiando di scaricare una batteria Optima in un mese di inutilizzo. Well thought out accessoriesWell known brandCons:Came with a plastic blow out adapter. As long as you get a good fit with the included ear tips, they are comfortable. In my opinion, they?re a great conservative shoe with just a touch of flair. It fits me more snuggly than some of the other styles. I love that you can tap on either the right or left earbud to control play/pause/volume etc!