This Montblanc 1858 Geosphere 0 Oxygen The 8000, which pays tribute to the world’s highest peaks and the mountaineers who dare to climb them in extreme conditions, is presented in a 42 mm titanium case that has no oxygen at all. This offers several advantages for explorers, as it eliminates fogging and prevents oxidation, leading to much longer life and better accuracy. The watch is equipped with the Manufacture MB 29.25 automatic movement with world time complication, including 24-hour time zone time, readable on the luminescent continents of the 3D rotating globes of the northern and southern hemispheres, day and night indications, Dual Time function and date. The watch is also equipped with a black ceramic bi-directional bezel fluted with luminescent cardinal points, a dark gray dial with sfumato effect with glacier motif with orange accents and a beveled and interchangeable titanium bracelet with precise adjustment system. The back cover of this model features a 3D laser engraving of the K2, rendered with incredible color, depth and realism.