In Crypto – Debit card Integrations, when a purchase is made, the card converts your cryptocurrency into fiat currency and the vendor is paid in the currency of their choice. The converted amount is taken from your crypto wallet and the total amount is updated. This method is subject to varying conversion rates, as it will depend on the value of your currency at the time of purchase.
 

Crypto debit cards are also useful for when travelling, as it means that you can easily withdraw the local currency without being subject to high fees. You are simply bound to the local conversion rate, rather than being charged an additional fee by your bank.