If the charging head is not correct, it cannot be charged.
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Before charging, dry the charging port to avoid dirty metal contacts, short circuit caused by water, or other risks.
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Use a Huawei charger with rated output voltage of 5V and rated output current of 1A or higher or a USB port on your computer to charge the wristband. If a non-Huawei charger is used, it may cause slow charging and heat. Therefore, use it with caution. You are advised to purchase Huawei chargers from Huawei official channels.