How to check the balance and expiration date of American Express card?

The online inquiry method of American Express card balance and validity period is as follows:

1. After purchasing the card, customers can log on to the website of American Express Card to check the balance. The website is located in the lower right corner of the front of the card. ?

2. Enter the card face number of 12 digits at the "Card Number" on the left side of the homepage of PR Newswire, and enter the check code displayed on the webpage at the check code.

3. Click "Query" to display the balance, validity period and card status of the corresponding American Express card.