Looks like I have very similar dimensions and health complaints as you. Have a look at the Hamilton Pilot Pioneer Khaki Mechanical:
https://www.hodinkee.com/articles/the-hamilton-pilot-pioneer-mechanical
It fits a smaller wrists really well. Usually comes on leather or NATO, but I like it on this Barton Elite silicon strap. Really nice watch!
I would be more interested in high end quartz if they weren't all so big and chunky. In fact if they were smaller than mechanical watches, I would prefer them.
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