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