To see the Google Pay button, you must use Chrome for Android version 59 or higher on an Android device running Android Kit Kat (4.4) or higher.
When you visit our online store using Chrome on an Android mobile device, you will see a button with the Google Pay logo on the cart page.
Your can tap the button to make a purchase with Google Pay. After you do, you will see your billing and shipping information. You will then have to authenticate to continue the purchase.