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  • Classic
  • Calendar
  • Time zones

1858 Geosphere Limited Edition 1858

Montblanc 2021

ref. 128504
Unisex

Montblanc continues its exploration of early twentieth-century observation watches with this original interpretation of multiple time-zone displays. Cased in bronze with a bidirectional rotating bezel, production is limited to 1858 pieces. Two vertically aligned domed globes on the dial represent the northern and southern hemispheres. They turn in opposite directions, completing one rotation every 24 hours to show world time with a day/night indication. A second time zone is given at 9 o’Clock, across from a date window at 3 o’clock. Hands, indices and the land masses on the two globes are coated with lume so that indications are easily read in low light conditions.Turning the case over reveals a depiction of the Gobi Desert, in honour of the solo trek made in 2004 by Montblanc ambassador Reinhold Messner. This realistic rendition is achieved by laser-etching the structured titanium surface to create a three-dimensional effect, then giving each surface a matte or glossy finish. Colour is imparted by laser-generated oxidation of the titanium, varying the level of oxidation to obtain different shades.

Function

  • Function
    Hours, Minutes, Small seconds

Complications

  • Time zones GMT
    Multiple time zones
  • Display
    Day/night
  • Calendars
    Simple calendar

Movement

  • Movement name
    MB29.25
  • Energy supply
    Self-winding
  • N° of jewels
    26
  • Power reserve
    42 hours
  • Vibrations
    28800
  • Form
    Round
  • Diameter
    mm

Case

  • Form
    Round
  • Material
    Bronze
  • Height/thickness
    12.80 mm
  • Diameter
    42.00 mm
  • Back
    Solid
  • Water-resistance
    100 m

Dial

  • Material
    Smoked
  • Colour
    Brown / beige

Strap

  • Material
    Calfskin
  • Colour
    Sfumato brown
  • Fastening
    Folding clasp

Artistic crafts

  • Type of artistic crafts
    Engraving

Characteristics

  • Limited/numbered edition
    1858