The Montblanc 1858 Geosphere 0 Oxygen The 8000 is a watch that truly celebrates the intrepid spirit of mountaineers who take on the world's highest peaks in the most challenging environments. This incredible timepiece is a marvel of engineering, housed in a titanium case that's devoid of oxygen, making it impervious to fogging and oxidation. This allows the watch to stay accurate and precise for longer periods, no matter how extreme the conditions. With a powerful MB 29.25 automatic movement, the Montblanc 1858 Geosphere 0 Oxygen The 8000 showcases a world time complication that displays the time of 24-hour zones readable on the luminescent continents of the 3D turning Northern and Southern Hemisphere globes, along with dual time display, day and night indications, and a date.