The secret as to why the Ultra isn't "too big" in practice may well be the band/strap design. The bands are quite wide and at least the Ocean and Trail bands are very stable on the wrist. And they are much more comfortable to wear than Garmin's standard bands. I think Apple's convex optical sensor design also helps.
However I think they should add a smaller model; my 162mm wrist is near the minimum of what works.
However I think they should add a smaller model; my 162mm wrist is near the minimum of what works.