Montblanc 1858 Geosphere Carbo₂ 0 Oxygen Limited Edition - 1969 pieces

The Montblanc 1858 Geosphere CARBO₂ 0 Oxygen Limited Edition, limited to 1,969 pieces, embodies innovation and boldness in watchmaking. Its 43.5 mm case, made of CARBO₂, is the result of a pioneering process that captures CO₂ from biogas production and mineral waste from recycling plants. Completely devoid of oxygen, this case eliminates fogging and prevents oxidation, ensuring increased precision and durability of the movement.

The dial features a black glacier pattern, evoking mountainous landscapes, and is adorned with luminescent Arabic numerals for optimal readability. The bi-directional rotating bezel in black ceramic, with luminescent cardinal points, completes the watch's robust and elegant aesthetic.

The 43.5 mm diameter and 13 mm thickness of the case give the watch a distinctive look, while the titanium case back is engraved with a 3D representation of Mont Blanc, paying homage to the spirit of exploration. The interchangeable black rubber strap, equipped with a fine adjustment system and a pattern reminiscent of textiles used by climbers, offers comfort and adaptability.

Main features of the watch:
•    Color: Black glacier-patterned dial with luminescent Arabic numerals
•    Materials: CARBO₂ case, black ceramic bezel, titanium case back, black rubber strap
•    Movement: MB 29.25 automatic movement with in-house world time complication
•    Complications: World hours with rotating globes of the northern and southern hemispheres, 24-hour scale, day/night indication, second time zone, date
•    Water resistance: 10 bar (100 m)

Dimensions and specifications:
•    Diameter: 43.5 mm
•    Thickness: 13 mm
•    Bezel: Bi-directional rotating black ceramic with luminescent cardinal points
•    Crystal: Domed sapphire glass with double anti-reflective treatment
•    Ident. no: 132300