I bought it on Ozon a couple of months ago for 10k, I did not regret it, although the crackling was very annoying. Some pros: Ease of use, charging speed (from 15% to 100% in no longer than 1.5 hours at a current of 5V to 2A), holds a charge for up to 4 days with regular phone calls (even with recharging, they are convenient to use), sound quality ( compared with Sennheiser HD215) PC connection speed, surprisingly good passive noise isolation, very convenient detachable microphone, multifunctional buttons, according to listeners - good sound quality through the microphone With its cons: With the active 7.1 mode, a crack appears when playing music, there is no problem with the mode turned off. When used for more than an hour in a row, the head fogs up in place of the headband seal. No protective case included - surprisingly lower price range Sennheisers come with one (at least the same Sennheiser HD215).