The Montblanc 1858 Geosphere 0 Oxygen The 8000 pays tribute to the world’s highest peaks and the alpinists who dare to climb them. It is housed in a 42mm titanium case totally devoid of oxygen and is powered by the MB 29.25 automatic Manufacture complication which includes the worldtime indication with turning Northern and Southern Hemisphere globes, a 24-hour scale, day/night indications, dual time display, and a date. The timepiece also comes with a fluted bi-directional black ceramic bezel with the cardinal points, a Sfumato dark grey glacier pattern dial with orange accents, and an interchangeable titanium bracelet. The caseback includes a 3D laser engraving of K2.