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There is a difference in volume between the left and right sides, insufficient low-frequency sound.
Bluetooth
One-touch connection (NFC) does not work.
Unable to make a Bluetooth connection.
The Bluetooth wireless communication range is short, or the sound skips.
The headset does not operate properly.
Cannot hear a person on a call.
Resetting or initializing the headset
Initializing the headset to restore factory settings
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