Looking to buy the OnePlus Watch 3

Hey all, looking for some buying advice here.

I'm looking to buy the Watch 3 as my next smart watch, and I'm currently using a Samsung Galaxy Watch 6 Classic 47 mm. I'm a big fan of the design and and larger size, it's not often that smart watch companies make their watches in bigger sizes. The bezel makes it look more like a traditional rather than a normal smart watch. I've also seen in reviews that the battery life is amazing, 4 to 5 days on a single charge.

Does anyone know if I can run Samsung Health on the Watch 3? That way I can sync my health data with my old watch and my current phone.

Also, I won't be using it with a OnePlus phone, will there be any features missing from it because of this?

Also, if there's anything else I should know.