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Montblanc 1858 Geosphere UltraBlack Limited Edition - 858 pieces

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The Montblanc 1858 product line is inspired by the legendary professional Minerva watches from the 1920s and 1930s which were conceived for military use and exploration. Reinterpreting these historical timepieces, the Montblanc 1858 product line expresses the spirit of mountain exploration, embodying the modern trend of returning to nature. The Montblanc 1858 Geosphere UltraBlack is dedicated to the world’s Seven Summit mountaineering challenge, the holy grail of mountaineering adventures. It comes in a 42 mm distressed stainless steel case combined with black and contrasting white design details. 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 luminescent continents for increased visibility and performance at night. The timepiece is completed with a black calf leather strap with beige stitching.

Ident No. MB128257

Caliber Automatic, self-winding Movement Caliber MB 29.25 Frequence 4 Hz Rubis Number 26 Jewels Balance Flat hairspring
Complications Worldtime with turning northern and southern hemisphere globes, 24-hour scale and day/night indication; Dual time indication; Date by disc
Case Material Distressed stainless steel Dial Description Black dial with white luminescent rhodium-coated Arabic numerals and indexes Bezel Type Bi-directional turning bezel Crystal Shape Domed Crystal Description Domed sapphire crystal with double anti-reflective coating Crystal Type Sapphire Crown Fluted distressed stainless steel with Montblanc emblem in relief Distance Between Horns 22 mm Bezel color Black Bezel Finish Microbille-Poli Water Resistant 10 bar (100 m) bar Case Back Material Distressed stainless steel case Bracelet Color Black Case Diameter 42 mm