A. Yes, it can be used overseas.
[How to Charge]
There are two charging methods available:
(1) Use a fully charged mobile battery.
Note: Charging with mobile battery is not recommended.
(2) If the AC adapter has a USB type-C output that matches the power standards in the country you are visiting (such as local laws, voltage, frequency, plug type, etc.) charging from a power outlet is possible.
Power standards, such as voltage and plug types, may vary by region within the same country.
When traveling overseas, please confirm the local specifications with your hotel or travel agency in advance.
Note: An adapter rated 9V3A or higher and AC100-240 can be used to supply power while overseas.