The Montblanc 1858 GMT Automatic Ref. 129615 reinterprets the traditional GMT complication through an original and immediately recognizable solution, integrated into the sporty and vintage design language of the Montblanc 1858 collection.

Unlike most GMT watches, this reference does not use a traditional additional central hand.

Montblanc has developed a system in which the second time zone is displayed via a red indicator positioned along the periphery of the dial, which moves along a fixed 24-hour scale.

This solution allows for reading the second time zone while keeping the center of the dial particularly clean and preserving the classic three-hand configuration.

The black dial uses large Arabic numerals and highly legible indices, accompanied by luminescent hands that reinforce the sporty character of the 1858 collection.

The red GMT indicator creates a sharp chromatic contrast with the black background and allows for quickly identifying the time in the second time zone.

The peripheral 24-hour scale also makes it possible to immediately distinguish daytime from nighttime hours in the additional time zone.

At 3 o'clock, there is a discreet date window, integrated into the design without compromising the legibility of the dial.

The 42 mm case is crafted from stainless steel and combines brushed and polished surfaces.

The bezel is fixed and made of steel, featuring a black anodized aluminum insert that completes the watch’s monochromatic setting.

The knurled crown allows for adjusting the time and movement functions, maintaining the robust and functional language typical of the 1858 collection.

The dial is protected by a resistant domed sapphire crystal with an anti-reflective coating, designed to ensure high legibility and scratch resistance.

On the back is a closed steel case back, decorated with an engraving that recalls the exploration and adventure theme characteristic of the Montblanc 1858 collection.

The heart of the Montblanc 1858 GMT 129615 is the Caliber MB 24.33, a self-winding mechanical movement.

The caliber guarantees a power reserve of approximately 42 hours and manages hours, minutes, central seconds, the date, and the second time zone indication.

The watch undergoes the Montblanc Laboratory 500 Hour Test, an internal Maison verification program that subjects the assembled timepiece to a series of checks regarding accuracy, performance, and reliability.

Reference 129615 is completed by a robust stainless steel bracelet, coordinated with the case and designed to emphasize the sporty character of the watch.

Water resistance reaches 100 meters / 10 bar, increasing the model's versatility for daily use and while traveling.

The Montblanc 1858 GMT Automatic 129615 therefore represents an interesting alternative to traditional four-hand GMTs.

The original red peripheral indicator, the 24-hour scale, the black dial, the 42 mm case, the automatic MB 24.33 movement, and the steel bracelet create a travel watch with a strong identity, capable of combining functionality, legibility, and contemporary design.

Technical Specifications

General Information

• Brand: Montblanc

• Collection: 1858

• Model: 1858 GMT Automatic

• Reference: 129615

• Gender: Men's

• Origin: Swiss Made

• Type: GMT / Travel Watch

• Movement: Mechanical automatic

• Caliber: Montblanc MB 24.33

• Power reserve: Approximately 42 hours

• Test: Montblanc Laboratory 500 Hour Test

• Functions: Hours, minutes, central seconds, date, and GMT second time zone

Case

• Diameter: 42 mm

• Material: Stainless steel

• Color: Steel / silver

• Finish: Brushed and polished

• Bezel: Fixed

• Bezel material: Stainless steel

• Bezel insert: Anodized aluminum

• Insert color: Black

• Crown: Knurled

• Case back: Closed steel

• Case back decoration: Exploration theme engraving / Montblanc 1858

• Water resistance: 100 m / 10 bar

Dial

• Color: Black

• Type: Analog

• Numerals: Arabic

• Indices: Highly legible

• Luminescence: Present

• Hands: Hours, minutes, and central seconds

• GMT: Red peripheral indicator

• GMT scale: 24 hours

• Second time zone: Yes

• Date display: Yes

• Date position: 3 o'clock

• Chromatic contrast: Red GMT indicator on black dial

Movement

• Caliber: Montblanc MB 24.33

• Type: Mechanical automatic

• Power reserve: Approximately 42 hours

• Functions: Hours, minutes, central seconds, date, and GMT

• Second time zone: Peripheral indicator

• Scale: 24 hours

• Watch test: Montblanc Laboratory 500 Hour Test

Crystal

• Material: Sapphire

• Profile: Domed

• Treatment: Anti-reflective

• Feature: High hardness and scratch resistance

Bracelet

• Material: Stainless steel

• Color: Steel / silver

• Finish: Brushed and polished

• Design: Sporty

• Clasp: Folding

Functions and Features

• Montblanc 1858

• 1858 GMT Automatic

• Swiss Made

• Travel Watch

• GMT

• Second time zone

• Peripheral GMT indicator

• Red GMT indicator

• 24-hour scale

• Hours

• Minutes

• Central seconds

• Date

• Date display at 3 o'clock

• Black dial

• Arabic numerals

• Luminescent elements

• Stainless steel case

• 42 mm diameter

• Fixed bezel

• Black anodized aluminum insert

• Mechanical automatic movement

• Montblanc MB 24.33 caliber

• Approximately 42-hour power reserve

• Montblanc Laboratory 500 Hour Test

• Domed sapphire crystal

• Anti-reflective treatment

• Closed case back

• Engraved case back

• Stainless steel bracelet

• Folding clasp

• 100-meter water resistance

• 10 bar

Accessories

• Original Montblanc box

• Original documentation

• Full Set, unless otherwise indicated

Warranty

All products are covered by a 2-year seller warranty.

Exceptions apply to products for which the manufacturer provides a longer warranty, which will apply according to the terms and conditions established by the manufacturer itself.

For discontinued products, the 2-year seller warranty remains valid, even if the manufacturer provided a longer warranty for the model.