can use
Because this wristband has a voltage limiting current protector on the side of the charging port, no matter how big the charging head you use, the voltage limiting current protector will be limited into a stable current, so it will not break.
The bracelet is just as good as the charging head
It has its own charging cable, if there is no charging cable is not possible, using the charging head of the phone is OK
Keep bracelet its charging interface, if the interface with the mobile phone charger is the same, then you can also use the mobile phone charger to charge