After three days of use, the headphones after turning on could not connect to the phone. The phone sees them, but does not connect. The blue diode on the headphones was on (and should be blinking), it was impossible to turn them off - zero reaction when the button was pressed for a long time. I connected it to the charger, turned it off after half an hour, and they turned off. After turning it on everything worked properly. I took it back to the store the next day.
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