I have unfortunately found that the headphones while producing a fairly transparent but somewhat tinny sound.
The basses are extremely weak (despite good fit into the ear). This is unacceptable for a headphone in this price range. The accessory is limited even on rather meaningless "stuff". The different plug attachments are standard and the tiny "cleaner" to clean the headphones i will start to lose no words. The box is quite nice, but I've used it ever.
Furthermore, the packaging is one of the worst trash packs that I've ever seen.
So if you want to hear more bass heavy music (electric, metal, etc.) will probably be disappointed. For jazz and classical music on the other hand they are probably fine.
... And the strengths:
The headphones sit very well in the ear and can be worn very comfortable for several hours. The workmanship is very good!
Conclusion:
Despite good workmanship I give only 2 stars because of apparent weaknesses in the frequency response. At this price I do not expect that the manufacturer attaches accessories, I do not need anyway but a well-balanced sound in all frequency ranges. I would buy me not again, classical or jazz fans but definitely recommend buying!
There really are not bad headphones but with the price and the presentation I expect great sound!