The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition is making waves in the luxury watch industry. This groundbreaking timepiece combines cutting-edge materials with sophisticated complications, setting a new standard for high-end wristwatches. The CARBO₂ 0 Oxygen model stands out for its innovative use of recycled carbon dioxide and zero-oxygen technology, showcasing Montblanc’s commitment to sustainability and precision engineering.
This limited edition watch boasts a range of impressive features that cater to discerning watch enthusiasts and world travelers alike. From its unique case material to its world time complications, the Montblanc 1858 Geosphere CARBO₂ 0 Oxygen pushes the boundaries of watchmaking. In the following sections, we’ll explore the watch’s innovative CARBO₂ case, its zero-oxygen technology, and its advanced world time functions, shedding light on what makes this timepiece a true marvel in the realm of luxury watches.
Innovative CARBO₂ Case Material
The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition showcases a groundbreaking case material that combines sustainability with cutting-edge technology. The watch’s middle case is crafted from CARBO₂, a proprietary composite material developed through an innovative process . This process captures CO₂ from biogas production and mineral waste from recycling factories, using a calcium dissolution and carbonation technique . The resulting powder, consisting of CO₂ and CACO3, is then combined with carbon fiber to create the novel case material .
The CARBO₂ case not only represents an environmentally friendly approach to watchmaking but also offers a unique esthetic appeal. Each case has a distinctive appearance with variable shades of dark, depending on the particular mix of carbon fiber and CACO3 . This results in every timepiece being truly one-of-a-kind, adding to its exclusivity as a limited edition of 1969 pieces .
To complement the CARBO₂ middle case, Montblanc incorporates titanium components, enhancing the watch’s durability and lightweight properties . The case measures 43.5 mm in diameter, striking a balance between presence and wearability . A blue gasket surrounds the crystal, creating a subtle dark blue halo that adds a touch of elegance to the watch’s face .

Zero Oxygen Technology
The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition showcases a groundbreaking feature: a completely oxygen-free environment inside the watch. This innovative technology enhances the timepiece’s performance and precision, especially in harsh mountain environments . The absence of oxygen eliminates fogging, which can occur with drastic temperature changes at high altitudes, and prevents oxidation of the watch components .
The watch’s movement, the MB 29.25 automatic, operates in this oxygen-free environment. This design choice improves the longevity of the movement by protecting it from oxidation . Without oxygen, all components last longer and provide greater precision over time . Additionally, the airless environment allows the oscillating balance wheels to operate free from air drag, contributing to improved accuracy and reduced power loss .
This zero-oxygen technology is only the second of its kind, following the MB 29.27 chronograph used in the Everest edition . Montblanc’s ability to produce various movements with this “0 Oxygen” feature showcases their commitment to innovation in watchmaking .
World Time Complications
The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition boasts an impressive world time complication. The watch features two distinctive domed hemisphere globes that rotate, offering a unique world time indication . The Northern Hemisphere globe at 12 o’clock turns counterclockwise, while the Southern Hemisphere globe rotates clockwise, with both completing a full rotation every 24 hours . Each globe is surrounded by a fixed 24-hour scale and a day/night indicator, using contrasting colors to represent day and night . The longitude reference median for both hemispheres is highlighted with blue Super-LumiNova, making it easy to find the location for GMT/UTC +0 . Adding to its adventurous spirit, small red dots on the hemispheres represent the world’s Seven Summits, the highest mountains on each continent .
Conclusion
The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition stands out as a game-changer in the world of luxury watches. Its groundbreaking use of recycled carbon dioxide in the case material and zero-oxygen technology showcases Montblanc’s commitment to sustainability and precision. The watch’s unique world time complications, featuring rotating hemisphere globes, add a touch of adventure to its sophisticated design. This blend of cutting-edge materials, innovative technology, and advanced timekeeping functions sets a new standard in high-end watchmaking.
With only 1,969 pieces available, this limited edition timepiece is sure to catch the eye of watch enthusiasts and collectors alike. Its one-of-a-kind appearance, thanks to the variable shades in the CARBO₂ case, makes each watch truly unique. The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition not only tells time but also tells a story of innovation, sustainability, and adventure, making it a remarkable addition to any watch collection.