The choice of materials is very high (in principle almost entirely leather and metal), only the somewhat shaky control element like not so good to me. The buttons have simply no clean pressure point and therefore act haptic something cheap. The short, little meaningful instruction manual is an imposition, a PDF file can be found no longer even in HK.
Of course, the headphones from 2012 supports even the latest BT protocols. Whether, however, evidences a real disadvantage I can not judge. The range is certainly far above average in my experience with BT headsets.
Sonically plays the headphones in the upper class, especially the bass is very strong and is always kept clean. However, the final sonic brilliance lacking (especially in the unjust direct comparison to my B & W P7), which is why he was the absolute wrong choice just for classical music in my view. Sometimes you can perceive a slight noise, but that may possibly also of the concrete used connection-oriented protocols (ie esp. With or without aptX) depend.
Overall, the purchase goes (approximately EUR 100 at OVP) in view of value for more than clear. I had the part mainly bought for watching movies and music on the TV Box Fire, since one since the last update BT headphones can connect directly. And for the little Basslastigkeit headphone is even right.