19mm at the lugs to 14mm at the clasp. Interestingly, I *don't* think the taper looks that drastic. I would think that 19->14 would look more radical than this does.
But this watch could be worn with confidence and security on a wrist as small as... I dunno, pretty small (I think it looks a little bigger on me in this photo than in reality.)
This was never going to be my only watch, but it feel so obviously ready to accompany me ANYWHERE I want to go doing ANYTHING I might want to do, that I see how it could be. As for the AR: if they hadn't told me it had AR coating, I never would have guessed. Plenty of Rs coming off this flat crystal