Montblanc 1858
1858 Geosphere


Montblanc 1858

1858 Geosphere


Pngwatch 2020 10 16t095909.082 150x150 Untitled Design 97 1 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 bi-metal titanium and stainless steel bracelet.


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, world time
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 Bi-metal titanium and stainless steel bracelet
Buckle Stainless steel triple folding clasp