The Yema Navygraf Marine Nationale CMM.10 21.14.75.SN.M is a phenomenal diving watch paying tribute to 400 years of the Marine Nationale. To begin, the watch is housed in an elegant 39mm case with a thickness of just 11mm (excluding crystal) so it fits beautifully around most wrists. The watch features a spectacular sapphire insert bezel, which also lights up in the dark. Which is of course very practical given the 300m water resistance. The watch also comes with a very comfortable Marine Nationale parachute strap. Under the hood is the Yema manufacture Caliber CMM.10. This amazing in-house movement is produced in Switzerland and France and has an impressive 70 hour power reserve and operates with an accuracy of +5 and -3 seconds per day. And it's not just good in performance, this beautiful masterpiece is also visible through the caseback window. The Navygraf Marine Nationale is a perfect watch, comfortable, beautiful, elegant and carries every feature you may wish for in a diving watch!