Yes, BookBeat works all around the world, so you can use a gift card abroad or give one to someone that lives abroad.
You only need to consider that a gift card is only valid for the website it was bought on, so make sure that is the website the gift card is redeemed on. It is also important to note, that a local payment method for the gift card market is needed, should the gift card user want to continue using BookBeat after the gift card period or if they need more hours and want to upgrade or buy hours.
Gift cards are only available for the following markets and have to be bought on the respective website: Austria, Belgium, Denmark, Finland, Germany, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
Gift cards are not transferable between markets.