Single-ear switching to dual-ear pairing method: 1: Disconnect Bluetooth pairing 2: Turn off both ears and put them into the charging compartment 3: Press and hold for 15 to 20 seconds at the same time without letting go 4: Wait for the red, blue and white lights of the two earphones to flash three times quickly, then let go and take them out 5: Turn on Bluetooth and automatically connect to both ears. Headphone enthusiast.
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