I carefully and actively use the headphones for a little over a month, some shortcomings began to come to light only as long-term use, for example, there was no interference at first, and the sound, in principle, rarely disappears. Different pros: The battery holds up well. Comfortable. Quality in appearance. With its cons: 1. Sometimes the sound disappears, despite the fact that the usb whistle is in direct line of sight of the headphones, you have to reconnect the whistle so that everything works fine again. 2. It is not uncommon to hear such and such interference. 3. The ear pads, although comfortable, are difficult to stay in for a long time because the ears sweat.