Yes — your own location does not restrict the card. The cards are issued in the United States and work anywhere online that accepts Visa or Mastercard, wherever you happen to be.

A cross-border fee applies only where the merchant settles outside the United States. Many US services settle in the US, so it does not apply to them; some platforms bill customers in other countries through a company outside the US, and then it does. Where it does apply, it appears on the transaction rather than being folded into the total.

A charge in another currency is converted by the card network at its own rate.

There is no plastic card, so a card cannot be used at an ATM. In shops you can pay by adding it to Apple Pay or Google Pay.