The Montblanc 1858 watch series is inspired by the professional Minerva watches from the 1920s and...The Montblanc 1858 watch series is inspired by the professional Minerva watches from the 1920s and 1930s which were conceived for military use and exploration. It combines a 42mm round shaped distressed stainless steel case and black leather strap with a traditional buckle. It has a black analogue dial with white luminescent rhodium-coated Arabic numerals and indexes, a date display, and two 24 hour sub-dials, all of which is protected beneath domed scratch resistant sapphire crystal glass with a double anti-reflective coating. Power is generated by the Calibre MB 29.25 automatic movement with 26 jewels and a power reserve of up to 42 hours. This model also has a water resistance of up to 100 metres. The Montblanc manufacture world-time complication is composed of 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 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. Combined 42mm stainless steel case with black and contrasting white design details. The timepiece features a manufacture world-time complication developed by Montblanc in Villeret: two domed globes, turning in opposite directions, that complete a full rotation in 24 hours 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.
This guide is for owners of the Montblanc 1858 Geosphere UltraBlack Watch who want to understand its features and care for it properly. It highlights the watch's world-time complication and robust design, allowing you to easily track different time zones and withstand various environments. Note that, while the watch is water-resistant, it's essential to understand its limits to preserve its integrity.
All features
Material
Leather
Series
1858
Model Part Number
128257
Brand
Montblanc
Extended Product Information
FAQs
How do I set the time on my Montblanc 1858 Geosphere UltraBlack?
Pull the crown to the second position and rotate it to set the correct time. Make sure the crown is pushed back in when finished.
Is the Montblanc 1858 Geosphere UltraBlack waterproof?
Yes, it is water-resistant up to 100 meters, which makes it suitable for swimming and shallow diving.
What kind of movement does this watch have?
It uses the Calibre MB 29.25 automatic movement.
How often should I service my watch?
It is recommended to have your watch serviced every 3-5 years to ensure optimal performance.
How do I care for the leather strap?
Clean the leather strap with a leather-specific cleaner and avoid prolonged exposure to water.
What materials are used in the watch?
The watch features a stainless steel case, sapphire crystal glass, and a calf leather strap.
What is the power reserve of the watch?
The power reserve is up to 42 hours.
What are the dimensions of the watch?
The watch has a case size of 42mm.
Troubleshooting
Watch is not keeping accurate time.
The watch may need to be wound or serviced. Ensure it is fully wound and consider having it inspected by a professional watchmaker.
World-time complication is not displaying the correct time zones.
Check the time zone settings and ensure they are properly aligned. Refer to the user manual for detailed instructions on setting the world-time function.
The watch has condensation inside the glass.
Immediately take the watch to a professional watchmaker to prevent damage to the movement.
Pros and Cons
Pros
Sophisticated world-time complication is ideal for frequent travelers.
Robust stainless steel case and sapphire crystal glass offer excellent durability.
Luminescent elements provide clear visibility at night.
The use of high-quality materials such as leather adds to its luxury appeal.
Automatic movement provides convenience and reliability.
Cons
The watch may require professional servicing.
Leather strap requires specific care to maintain its condition.
Setting the world-time complication might require some initial familiarization.
High-end watches can be susceptible to theft or loss.
Setup, Compatibility & Care
Setting Up
Winding the Watch: If the watch has stopped, manually wind the watch by turning the crown clockwise 15-20 times.
Setting the Time: Pull the crown out to the second position to adjust the time. Rotate the crown to set the correct time.
Setting the Date: Pull the crown to the first position. Rotate the crown to set the date.
Compatibility
This watch is compatible with any wardrobe, from casual to formal.
Care
Cleaning: Wipe the watch with a soft, damp cloth to remove any dirt or residue.
Leather Strap Care: Avoid prolonged exposure to water. Clean the strap with a leather-specific cleaner.
Servicing: Have the watch serviced by a professional every 3-5 years to maintain its accuracy and prolong its life.