- It's more likely that the sound quality Not a problem, it's not horrible, but at $25–30,000, it's obviously frustrating that it can't match wired analogs that cost $10–15,000 (Sony MDR-1A, Audio-Technica m50). While noise cancellation makes it feasible to listen to music in noisy environments, you would expect them to be at least as good as their wired equivalents, which are typically 2-3 times more expensive. Closely, a sound lacks the same comprehensibility and pettiness as wired ones. Perhaps bitrate is the issue (even when opting to prioritize quality), but I haven't heard any wireless headphones that compare to the aforementioned cable models;
- touch control - it works, but occasionally false positives happen and sometimes touches aren't even acknowledged, so it's more "for pathos" than it is actually very practical. - The proximity sensor, which pauses or turns on the music again, has a delay in operation of 5-10 seconds, and if you go in a tight winter jacket, then the headphones are still tightly pressed to the neck when removed, then the sensor does not pause the music at all; - In locations where there are a lot of bluetooth devices, such as in stores where these headphones are sold, the connection is constant; - In places where there are few bluetooth devices, such as in restaurants, the connection is inconsistent