A:AnswerIf you are still interested, I have a MELON of a head myself and they fit quite well. I haven't "durability" checked them becuase I'd like to keep them, but they don't seem like they'll break without intent.
A:AnswerThat's the wireless adaptor. You plug that into your device and the headphones will wirelessly connect to it. If you don't want to use them wireless use the audio cable provided.
A:AnswerNo. I’d buy it new from Best Buy, Sony or any other third party retailer so I can be sure it hasn’t been tampered with. Especially for next gen products like this.
A:AnswerOrdering it open box just means someone didn't want it and they bought it back to the store. They should just be as good. Just picked it up fresh off the rack.