Montblanc 1858
1858 Geosphere


Montblanc 1858

1858 Geosphere


Pngwatch 2020 10 16t100556.291 150x150 Pngwatch 2020 10 16t102940.434 150x150


The Montblanc 1858 Geosphere is dedicated to the world’s Seven Summit mountaineering challenge, the holy grail of mountaineering adventures. It comes in a 42 mm titanium case combined with blue and contrasting icy white design details, finding inspiration in the colours of glaciers. The timepiece features a manufacture world-time complication developed by the Montblanc watchmakers in Villeret: two domed globes, turning in opposite directions, that complete a full rotation in 24 hours. Both are surrounded by a scale with the 24 time zones, along with a day and night indication in contrasting colours. This provides an instinctive way of appreciating the different time zones, aided by SuperLumiNova® applied to the continents for increased visibility and performance at night. The timepiece is completed with a blue Sfumato calf leather strap with white stitching.


Shape Round
Glass Sapphire domed
Case Back Titanium case back with Mont Blanc mountain engraving with a compass and two crossed ice pick-axes
Case Material Titanium
Diameter 42 mm
Thickness 12.8 mm
Colour Blue
Hour Markers White Luminescent Arabic Numerals And Indexes
Hands Rhodium-coated and white,Luminescent cathedral-shaped hour-hand and minute-hand, white luminescent time zone hand
Date Date indication at 3 o'clock
Power Reserve Approx. 42 hours
Movement and Functions
Movement Automatique
Caliber MB 29.25
Movement Description Mechanical movement with automatic winding, worldtime
Functions Hours, Minutes, Second time zone, hand-type date
Special Functions World time with northern and southern hemisphere globes, 24-hour scale and day/night indication; Dual time indication; Date by disc
Material Calf skin strap
Colour Blue Sfumato with white stitching
Buckle Titanium triple-folding clasp