After the left earpiece died, I disassembled them. As a result, I saw broken wires in several places, the assembly was terrible, the soldering of wires near the battery was generally upsetting, there are two wires in heat shrink, but the tips are a little bare, I thought the sound sometimes disappeared for half a second due to the bluetooth connection, but it turned out that these two wires touched each other and shorted I don't recommend buying these headphones.
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