





Montblanc 1858 Geosphere 0 Oxygen Watch
20€ de réduction avec le code Newsletter
Livraison offerte dès 100€ d'achat
The Montblanc 1858 Geosphere 0 Oxygen embodies the spirit of alpine exploration, with its glacier green Sfumato dial, inspired by the deep hue of emerald icebergs, also known as "jade bergs." This timepiece is housed in a 42 mm stainless steel case, completely devoid of oxygen, offering benefits such as fog elimination and oxidation prevention, thus ensuring enhanced accuracy and durability of the movement.
The design of this watch is distinguished by a bi-directional notched bezel in green anodized aluminum, adorned with luminescent cardinal points, adding a touch of sophistication and functionality. The glacier green Sfumato dial is enhanced with 3D rotating globes of the northern and southern hemispheres, a 24-hour scale, day/night indications, a second time zone, and a date, providing optimal readability and exceptional functionality for travelers.
Made of high-quality stainless steel, the 42 mm diameter and 12.8 mm thickness case ensures timeless robustness and elegance. The interchangeable stainless steel bracelet, equipped with a precise adjustment system, guarantees optimal comfort and adaptability to every wrist. The case back is adorned with a colored 3D laser engraving representing Mont Blanc, paying homage to the summit adventurers.
Main features of the watch:
• Color: Glacier green Sfumato dial with 3D rotating globes
• Materials: Stainless steel case, green anodized aluminum bezel, stainless steel bracelet
• Movement: Automatic movement caliber MB 29.25 with in-house universal time complication
• Power reserve: 42 hours
• Water resistance: 10 bar (100 m)
Dimensions and specifications:
• Diameter: 42 mm
• Thickness: 12.8 mm
• Bezel: Bi-directional rotating in green anodized aluminum with luminescent cardinal points
• Crystal: Domed sapphire glass with double anti-reflective treatment
• Ident. no: 133303
Service Guide
Watch maintenance
Repair in 2h
![]() |
Polishing
![]() |
Nib Cleaning
![]() |
Nib Fitting
|
Need maintenance advice?
Call us at: +33 4 97 06 16 66
Our team of specialists welcomes you in-store for the maintenance and repair of your Montblanc writing instruments
Need advice?
Our ambassadors are available from Monday to Friday from 10 AM to 7 PM at +33 4 97 06 16 66
Choose options






Explore
Our collections
Traditional watches

Up to 4810 meters deep
This edition, which can dive up to 4,810 meters below sea level, is equipped with "Zero Oxygen" technology, ensuring tested performance in challenging environments with an anti-fog system and prevention against internal oxidation.
COSC certification and a power reserve of approximately five days.
You might also like

Maintenance tips
Taking care of your watch
Your watch can be compared to a piece of jewelry. Creations that incorporate such a level of craftsmanship require special care to maintain their perfect appearance and performance. Depending on its mechanical characteristics, your watch should be serviced every three to five years.