With reference to picture 1.....
Across the centre, to the outer edge of the cirular Bezel in line with the second hand...36mm
Across the centre to the outer edge of the case.....40 mm
With reference to picture 3
The first 3 links after the clasp on the left and the first 4 links on the right are all adjustable. The bracelet is currently adjusted to my wrist, which is 18cm.