Seiko now lists the case dimensions as 40mm wide, 13mm thick, and 46.6mm lug to lug. When I measured with my
link own calipers, I
link got 40.2 x 13.4 x 46.6mm. The lugs remained drilled (amazing) and fit the bracelet's 20mm end links. The caseback remains a closed steel format, but thanks to a new design, water resistance is now 300 meters (compared to the
link 200m offered by the previous generation).