Her er tykkelsen oppgitt til å være 12 mm:
https://www.watchpilot.com/products/u-boat-8893-classico-42mm-tungsten-bkmens-watch
Og her 15 mm:
https://www.timeshop24.com/u-boat-8893-classico.html?gclid=CjwKCAjw69moBhBgEiwAUFCx2DCpGK1QbpKWPVZK9B_AJSWU3DqeTnYaQLFOgYFw8SiVSab77B5I6xoCoRwQAvD_BwE