Which watches does Send to Watch work with?

Send to Watch relies on Google's own watch-face-push platform feature, which needs a fairly recent Wear OS watch — an older one may not support it even if it otherwise runs Wear OS. It's been verified end-to-end on a Pixel Watch 2.

Not sure if yours qualifies?

Pair your watch, install the Multiverse companion on it, then open a character and check for the "Send to Watch" button — it only appears once the app confirms your watch actually supports the feature.

Everything else still works

An unsupported or missing watch never blocks the rest of the app — generating realms, unlocking characters, and reading their stories are all phone-only.