The card is reloadable, so you can continue using it even after the initial balance is spent

https://www.evernote.com/shard/s643/sh/4cd54eaa-d769-b64b-32e0-022dc297d278/tnTLIgS4EbzdHRHAXifUUJLnA3UNVJgZsF6_BKa_7AGE8aaj-_FxK2Otnw

The card is reloadable, so you can continue using it even after the initial balance is spent