Hello, my friend needs 2 earphones to operate at the same time to <br>restore the factory settings . 1. Press and hold the earphone for 3-5 seconds, turn off the earphone 2. Press and hold the earphone for about 15 seconds, the red and white light will flash quickly (for 2 times) 3. Put the earphones into the charging box 4. Pick up 2 earphones, the automatic matching is successful<br><br><br><br><br>
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