Hello3 Watch does not support Apple Watch power bank. This is because the charging interface and charging method of the watch of different brands may be different, and the interface and charging method of the Apple Watch charging bank are incompatible with the Hello3 watch.
Therefore, the Apple Watch charger cannot provide charging function for the Hello3 watch.
If you need to charge the Hello3 watch, it is recommended to use an appropriate charger or charging cable to charge it.