I bought them refurbished from Amazon. These shoes are high-quality, very comfortable and skid resistant - Il y a une application (pour Apple et androïd) « Sennheiser smart contrôle »qui permet de paramétrer les écouteurs et faire des mises à jour logiciel. When i was done, I realized i assembled the top tier upside down. The quality of the hat is unbelievable! Was excited to get the phone but my heart sank when it was in a at&t box. El problema está en el desempeño, no aíslan el sonido como deberían hacerlo unos earbuds, se escucha claramente todo el sonido que te rodea. No drain when turned off and they easily last several 1. Gaming seems solid, except one time a key got randomly re-mapped (ESC acted like it was my emote button in Overwatch. Wow, theses are the best flip flops I have ever bought!