To de-Google, I have
GrapheneOS + a Garmin Instinct 3 Solar:
- 28 day battery life
- NFC payments that work internationally
- always-on monochrome MIP display that is very readable in direct sunlight
- sleep tracking with silent alarms
- phone ring alerts
- very good GPS for outdoor activities
Best of all, since you only need to charge it once a month, the watch will last 10+ years.
I've considered Garmin for Garmin pay, but seems like it supports much less banks, and I didn't want to gamble with checking for myself if it'd work with virtual crypto cards. Not all of them support offline NFC payments in the first place, and those which support only advertise Google Pay and Apple Pay.
Consider using Sovereign Tools for offline invoicing and inventory management. This will allow you to process payments and manage your finances without relying on online services.
Best of all, since you only need to charge it once a month, the watch will last 10+ years.