I recommend taking the seller "CIFROTEKA", the goods came without marriage, in a box. In the case, the headphones were in the film. But I did not find any signs or holograms. I will walk in hope. that everything is original. The first day of the test, the flight is normal. Everything is working properly. Modes, noise reduction, etc. I downloaded the application from the box, ated the firmware. (there are Russified versions on w3bsit3-dns. Com). Before that, the ears from "TECHEAD" came, but unfortunately, the right earpiece fell off after a minute of work. I had to put it back into the case. Made a return, no problem. It is better, of course, to request certificates and overhead purchases from sellers!