Desde que vi el empaque pensé que no era original como los que ya había comprado anteriormente, ni como los que muestran los demás compradores. So it was time to replace them. So may need dual or multicharger cable to use this for charging. But these Koss headphones are terrible. Within 2 hours, the memory foam wears down to nothing more than just lightweight cheap foam that provides no support. Most importantly, I?m not worried about it stopping my door from closing completely. The mesh one lets your skin breathe and stops you sweating. I can say that the building materials are great, to be expected of a $130 Headset - at the time of this posting & purchase. Im a big review reader as I dont want to purchase the wrong product, right. I am usually not a fan of shoes like this because they usually irritate my toe, These DO NOT.