On the downside it is true that they are set up as a masterslave to give you stereo and the slave cuts out for about 14 second once ever 15 minutes or so but that is a small price to pay for freedom these things honestly blew my mind on so many levels first of all let start with the box i love how they charge in the box and and less im wrong from what i understand if the way it works you can charge the box alone and keep it with you to charge your earpiece is if they go dead while youre out and about i love that i love thats you have the option to wear im on a cord or not thats great and case you dropped one so the whole box thinking is wonderful second of all they produce wonderful sound and i mean really noise cancelling i have to say that it story is true about my daughter crying about her grilled cheese burning and i was testing these and had them in listening to my favorite songs and for the reference her grilled cheese brunt to the crust wasnt until i smelled it that are realize oh my gosh and shes in the background screaming and crying they really did cancel her out right beside me so be weary of that they really do cancel noise out but the sound they produce is wonderful im not a huge huge music listen person but when i do want to hear a song i want to hear it right and in the best quality and i promise you if these were named and probably are better than some of the other name brands you would pay triple dollars for these i mean that these are awesome there is no complaints whatsoever i have on them they blew my mind i really do think that these are perfect theres nothing they could have done that can make these any better they are on the other hand from my husbands point rather large but compared to any other headphones theyre not really thats an opinion thing i guess and i found them to be just fine once you get them in your ear you dont know how big they are and you cant tell and they fit perfect and stayed perfectly in place for me they easley connected to my phone and simply connected to each other i really wish i had more stars to give these i did receive these as a promotional offer for my honest opinion evaluation and review and i absolutely love them these things are surprisingly good