Standalone watch?

Has anyone found a smart watch they can use in actual, honest to God standalone mode? As in, no phone at all, or at least no phone with a plan?

I've gotten tantalizingly close with a Galaxy 7 watch which is essentially a moderately dumb phone (yes you can get on the internet, on a 1.5" screen). But I still have to have a phone and pay for it, which sits at home costing me $50 bucks a month for gigs of data I don't use.

Has anyone found this magical watch?