I bought this model, in general, I’m satisfied with the purchase. I haven’t measured the autonomy yet. I can’t say if the declared time holds the battery. P. S I’m adding, so, after a day of use, I drove the headphones at 90% volume from 16.35 to 202022 hours (40 minutes of conversation, the rest of the music) is unexpected of course, but the fact. Only the right earphone worked. Let's see what happens next
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