The charging method of Huawei Bluetooth headset is as follows:
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1. Connect the USB-C port of the headset to the dedicated charger or USB port of the computer.
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2. Press and hold the four buttons of the headset at the same time until one side of the headset has a blinking light, that is, the headset is charging.
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3. Charge until the headset indicator continues to blink, that is, the headset is fully charged.
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4. Note that when the four buttons are pressed at the same time, the indicator light can continue to turn dark, indicating that it is charging and will not be extinguished before it is full.