I attempted to reset the Watch SE, which is currently running 10.6.1 and enrolled in Beta updates. My iPhone is updated to 18.2, but the Watch app isn't showing any available updates.
Unable to update Apple Watch Se from 10.6.1 to Watch OS 11
The Watch app might not show updates because the beta version on your Watch isn't compatible with the iPhone's current software.
You might need to unenroll the Watch from the beta program or contact Apple Support for help syncing the software versions.