For the first time, the Huawei watch does not need to be charged for 12 hours, only for 3 to 4 hours. Long-term charging has no effect, but increases the harm.
Before charging a Huawei watch, keep the charging port dry. Be sure to remove water and sweat stains. It is recommended to keep the ambient temperature between 0 and 35 and use the device after it is fully charged.