How to use Android Pay on your Android Wear smartwatch

The payment system only works for NFC-enabled devices.

LG Watch Sport and Watch Style — The LG Watch Style supports Android Pay LG

Android Pay can now be used on select Android Wear smartwatches post Google's rollout of the Android Wear 2.0 update. Although the app is only available on the LG Watch Sport due to NFC requirements, other NFC-enabled watches can install the Android Pay app from the Play Store.

Here is how to install Android Pay on your phone:

Install Android Pay on your phone from the Play Store
Make sure your watch is connected to your phone via Bluetooth
Open the Android Pay app on your watch
Add the credit card that you want to use
Tap add card to choose from your previously-added cards in case you have used Android Pay on your phone
Your payment method is now set

How to use Android Pay

You will need to set up a passcode for your watch to keep the Android Pay safe
Now launch the Android Pay app on your watch
Put the top edge of the smartwatch against the payment terminal until you feel a long vibration on the watch
The payment terminal will sound a beep to confirm
In case you want to switch cards before paying, swipe up to reveal additional cards and change a new card to default
To delete any existing saved cards, follow the same steps for adding a card but just select the trash can to remove