These are the smartwatches that support Google Pay | Android Central
Smart Watch NFC | Google Pay Watch | WatchShop.com™
Ticwatch E3 Smartwatch for Men Wear OS from Google with Qualcomm Snapdragon Wear 4100+ Dual System Platform Google Pay GPS Heart Rate Monitoring Stress Management iOS and Android Compatible : Amazon.co.uk: Electronics
Tap to pay with your smartwatch - Google Wallet Help
Which watches can use Google Wallet? Here's our list
Garmin Venu® 3 | Fitness and Health Smartwatch
Upgrade: Digital Wallets | The Callaway Bank
Google Pay on Wear OS: Which smartwatches support it and how to use it - Wareable
Garmin Pay: Everything you need to know about the payment system
Support: Setting Up Garmin Pay™ - YouTube
Garmin Venu® 2S | Smaller-Sized Fitness & Health Smartwatch