The Santander UK debit card is a contactless payment card that comes with most of the current accounts offered by Santander. The features, costs, and limits of the card may vary depending on the type of account you have, but here are some general points to consider:

The card allows you to make purchases up to £45 in seconds wherever you see the contactless indicator.

The card also allows you to make online and mobile payments using Apple Pay, Google Pay, Samsung Pay, or Santander Wallet.

The card has a daily withdrawal limit of £300 at Santander ATMs and other cash machines in the UK.

The card has a daily payment limit of £25,000 for online and mobile banking transactions. 

The card charges a 2.75% non-sterling transaction fee for purchases and cash withdrawals made abroad. This means that if you spend £100 in a foreign currency, you will pay £2.75 in fees.

The card also charges a £1.99 non-sterling purchase fee for each purchase made abroad. This means that if you make 10 purchases abroad, you will pay £19.90 in fees.

The card also charges a £1.99 non-sterling cash fee for each cash withdrawal made abroad. This means that if you withdraw cash 10 times abroad, you will pay £19.90 in fees.