Movement Calibre Calibre MB 25.12 

Type of movement

Mechanical movement with automatic winding, chronograph  

Number of rubies

27 

Power reserve

Approx. 48 hours 

Balance

Flat hoop 

Frequency

28,800 A/h (4 Hz) 

Hairspring

Flat 

Displays

Hour and minutes from the centre, small seconds at 9 o’clock Chronograph’s elapsed-second hand from the centre 30-elapsed minute-counter at 3 o’clock

Habilage

Case

Alloy of bronze with slim curved horns featuring polished and satin finishing 

Crystal

Scratch-resistant, domed sapphire glass box with antireflective coating  Back

Titanium with bronze-coated and “Spirit of Mountain Exploration” special engraving

 Dimensions

Diameter = 42 mm; height = 14.7 mm

Water-resistance

10 bar (100 m) 

Crown

Fluted, in an alloy of bronze with Montblanc emblem in relief 

Dial

Black and beige-coloured with beige-coloured luminescent Arabic numerals, rose gold-coated and beige-coloured luminescent cathedral- shaped hour-hand and minute-hand, white-coloured chronograph second-hand and white-coloured counter hands, historical Montblanc emblem at 12 o’clock 

Wristband

High-quality beige-coloured NATO strap with bronze-coated stainless steel pin buckle

Limited Edition

1858 pieces

Also available in a stainless steel case with an aged, cognac-coloured calfskin strap (ident. 125581) or with a metal bracelet (Ident. 125582)

Certified by the Montblanc Laboratory Test 500

(* Super-LumiNova® is not a trademark owned by Montblanc)

Montblanc 1858 Monopusher Chronograph Limited Edition 1858

Movement Calibre MB 29.25 with Manufacture worldtime complication 

Type of movement

Mechanical movement with automatic winding, worldtime

Number of rubies

26 

Power reserve

Approx. 42 hours 

Balance

Flat hoop 

Frequency

28,800 A/h (4 Hz) 

Hairspring

Flat 

Displays

Hours and minutes from the centre, date at 3 o’clock

Second time zone at 9 o’clock

Turning northern and southern hemisphere globes at 12 o’clock and 6 o’clock with a 24-hour scale and day-night indication

Habilage

Case

Grade 5 titanium with slim curved horns featuring polished and satin- finishing. Bi-directional stainless steel bezel with blue ceramic, knurled finishing and engraved cardinal points coated with SuperLuminova  

Crystal

Scratch-resistant, domed box-shaped sapphire crystal with antireflective coating  Back

Titanium with “Spirit of Mountain Exploration” special engraving

 Dimensions

Diameter = 42 mm; Height = 12.8 mm

 Watertightness

10 bar (100 m) 

Crown

Fluted in Titanium with Montblanc emblem in relief 

Dial

Blue with white luminescent Arabic numerals, rhodium-coated and white luminescent cathedral-shaped hour-hand and minute-hand, white luminescent time zone hand, luminescent northern and southern hemispheres globes, historical Montblanc logo at 3 o’clock  

Wristband*

Blue Sfumato calf-skin strap from Pelletteria in Florence, Italy with Titanium triple-folding clasp

Certified by the Montblanc Laboratory Test 500

(* Super-LumiNova® is not a trademark owned by Montblanc)

*Also available with a bi-metal titanium and stainless steel bracelet and a stainless steel triple folding clasp (ident 125567).

Montblanc 1858 Geosphere

Certified by the Montblanc Laboratory Test 500

(* Super-LumiNova® is not a trademark owned by Montblanc)

The new Montblanc 1858 product line includes the Montblanc 1858 Geosphere, with its in-house Worldtime complication featuring the Northern and Southern Hemispheres, each completing one rotation every 24 hours. Its case is grade five titanium for enhanced comfort and lightness, and the bi-directional bezel is crafted in steel and blue ceramic. Completing the line-up are the striking blue-dialled Split Second Chronograph, the delightfully retro Automatic 24H featuring a stainless steel case with a bronze bezel and crown, and Monopushers with cases in stainless steel or bronze.

Movement Montblanc Manufacture Calibre MB M16.31 

Type of movement

Manually wound monopusher chronograph with split second, tachymeter and telemeter 

Chronograph

Monopusher with two column-wheels (one for the chronograph and one for the split second) and horizontal coupling

Dimensions

Diameter = 38.4 mm; height = 8.13 mm 

Number of components

286 

Number of rubies

25 

Power reserve

Approx. 50 hours 

Balance

Screw balance, diameter = 14.5 mm; moment of inertia = 59 mgcm2

Frequency

18,000 A/h (2.5 Hz)

Hairspring

With Phillips terminal curve

Plate

Rhodium-plated German silver with circular graining on both sides

Bridges

Rhodium-plated German silver with “Côtes de Genève”

Going-train

Gold-plated, faceted arms, diamond polished surfaces

Displays

Hours and minutes from the centre

Small seconds at “9 o’clock”

Chronograph’s elapsed-second and split second hands from the dial’s centre

Counter for 30 elapsed minutes at “3 o’clock”

Tachymeter and telemeter scales

Habilage

Case

Grade 5 titanium 

Crystal

Scratch-resistant, domed sapphire, antireflective crystal, anti- magnetized treatment Back

Screwed titanium case back with inset pane of sapphire crystal  Dimensions

Diameter = 44 mm; height = 14.55 mm

 Watertightness

3 bar

Crown

Fluted in titanium with Montblanc emblem in relief

Pushers

Monopusher chronograph integrated into the crown and one pusher at 2 o’clock for the split second

Dial

Gradated blue “grand feu” enamel dial with white Arabic numerals with Super-LumiNova® coating, black rhodium-coated and white luminescent hour-hand and minute-hand, black rhodium-coated second hand, beige chronograph second hand, orange split second hand, black rhodium-coated chronograph minute hand with orange arrow, historical Montblanc emblem at 12 o’clock, tachymeter scale on the central part of the dial and telemeter on the exterior of the dial

Wristband

Blue Sfumato alligator-skin strap from Pelletteria in Florence, Italy with Titanium pin buckle

Limited Edition

Limited Edition of 100 pieces

Special attention has been paid to the dial which is crafted from solid gold and is adorned with a gradated blue grand feu enamel, allowing an authentic shiny aesthetic. grand feu enamelling is one of the oldest and most precious crafts in watchmaking, providing intense hues and a subtle, yet magical depth. It is the art of applying colourful vitreous enamel paste to the surface of metal and firing it in a kiln. Nothing else renders colour like enamel does and the colours never fade even centuries later. The artisan dusts the enamel powder onto the disc and then briefly fires it at 800º C (1,472º F) before removing it and allowing it to cool, setting the enamel. The heating of the surface is done in layers with each layer heated at very high temperatures. The art of grand feu enamelling requires dexterity, skill and passion. This delicate gradation of blue is achieved by carefully playing with the height of the different layers of enamel. The blue coloured background is paired with orange and white elements that accentuate the vintage style, while also providing excellent readability of the complications both at day and night. The glass has an anti-magnetized treatment on the inside top sapphire crystal to enable greater precision of the two second hands of the chronograph.

Like the original timepiece, the Montblanc 1858 Split Second Chronograph Limited Edition 100 has a white telemeter scale that runs around the dial. The telemeter was a common feature on the legendary Minerva chronographs and adds both function and a vintage touch to this new timepiece. A telemeter makes it possible to measure the distance of a phenomenon which is both visible and audible, like the lightning and thunder in a storm. The chronograph hand starts at the instant the phenomenon is seen (lightning) and is stopped when the sound is heard (thunder). The position on the scale shows the distance in kilometres separating the phenomenon from the observer (or the user from the storm, in this example) at a glance. Calibration is based on the speed of which sound travels through the air, which is approximately 340 meters per second or 1,115 feet per second.

The timepiece also has a tachymeter (base 1000) at the centre of the dial in a colimaçon, snail shape, which lets the user measure a length of time of up to three minutes instead of one minute as is the case in a traditional chronograph scale around the dial. The tachymeter scale indicates the speed of a moving object, such as a car, over a known distance. As the moving car passes the starting-point of the measured course, whose length corresponds with that used as the basis of calibration, the owner starts the chronograph hand and stops it as the car passes the finishing- point. The number indicated by the hand on the tachymeter scale represents the speed in kilometres or miles per hour.It is combined with a complex “rattrapante” (Ssplit second) complication developed by the Montblanc engineers that enables the user to measure intermediate times without interrupting the ongoing measurement of a longer elapsing time. The “rattrapante” can be admired through the sapphire crystal case back like on a traditional timepiece with such a function. For a better legibility, the chronograph indications are displayed via a beige central chronograph second hand, an orange split second hand to measure a second time interval and a chronograph minute counter at three o'clock.

Seven Summits

The timepiece is dedicated to the world’s Seven Summit mountaineering challenge, the holy grail of mountaineering adventures, where climbers set out to ascend the highest mountains from each continent. The Seven Summits challenge is recognized as one of the most difficult mountaineering quests and only around 500 athletes have achieved the mission to date.

Certified by the Montblanc Laboratory Test 500

(* Super-LumiNova® is not a trademark owned by Montblanc)

Montblanc 1858 Split Second Chronograph Limited Edition 100

Montblanc 1858 Geosphere The Montblanc 1858 Geosphere watch is one of the key icons of the 1858 line with its two distinctive domed turning hemisphere globes and worldtime complication.  

This year, Montblanc is presenting the 1858 Geosphere in grade 5 titanium combined with blue and contrasting icy white design details, finding inspiration in the colours of glaciers and ice that can range from the purest white to the deepest shades of blue. All those elements create both a very cold and modern look. This icy-blue colour is the result of millions of years of pressure that removes the air bubbles in the ice, causing the light to reflect only the blue from the colour spectrum.

The Montblanc 1858 Split Second Chronograph Limited Edition 100 is equipped with the Manufacture monopusher chronograph calibre MB M16.31 that features two column wheels, horizontal coupling and a power reserve of 50 hours. The movement is an evolution of the MB M16.29 which takes its inspiration from the original Minerva calibre 17.29 developed in the 1930s, that was used for both pocket watches and wristwatches. The calibre MB M16.31 is the direct heir of the 17.29, and, like its predecessor, is composed of the same iconic V-shape bridge (whose design was protected in 1912) and a large balance wheel with 18 screws beating at the traditional frequency of 2.5 Hz / 18,000 A/H. Moreover, the calibre MB M16.31 brings the 17.29 lineage to a high level of fine watchmaking hand-finishing and manufacture mastery.

The Montblanc Manufacture in Villeret is a very special place that possesses the know-how to produce a movement from A to Z, making all the main components in-house, such as the plates and bridges in German-silver (“Maillechort”) with traditional hand-crafted decoration, and it also manufactures the full regulating organ in-house, including the hairspring internally.

The calibre MB M16.31 is particularly beautiful thanks to its handcrafted traditional finishings such as Côtes de Genève, inner angles, circular graining and bevelling – all performed at the Montblanc Manufacture in Villeret. The Split Second mechanism in the centre brings even more light to the entire movement.

Completing the overall design is a matching blue Sfumato alligator strap that has been hand- crafted by the Pelletteria in Florence, Italy.

Montblanc 1858 Split Second Chronograph Limited Edition 100

Montblanc reinterprets a 44 mm historical Minerva military monopusher chronograph, with the calibre 17/29, from the 1930s with a very distinctive dial comprising a snail shape tachymeter scale in the centre and a telemeter scale on the internal flange.  

The new Montblanc 1858 Split Second Chronograph Limited Edition 100 comes in a vibrant blue colour executed in gradated enamel combined with a 44 mm full satin-finished, grade 5 titanium case enabling robustness.

A Distinctive Complication

The worldtime display of the two hemispheres brings an instinctive way of reading different time zones. The timepieces have two turning domed hemisphere globes at six and 12 o’clock, which are surrounded by a fixed scale with the 24 time zones and include a day/night blue indicator that has been coated in rhodium (for both the Northern and Southern hemispheres). The longitude reference meridian for both hemispheres is highlighted with a blue line coated with SuperLumiNova®. Furthermore, a second time zone is located at nine o’clock and a date aperture (linked to the local time) is located at three o’clock.

In order to set the timepiece, the user first adjusts the turning hemispheres for worldwide time by aligning the GMT/UTC 0 line on London time (highlighted as a light blue colour line on the domes). The two globes are then synchronised. The Northern hemisphere turns anti-clockwise and the Southern one clockwise. The next step is to set the hour-hand (turning by hourly increment) in line with the local time (the globes are not turning), this also adjusts the date. Finally, the second time, located at 9 o’clock, is set via the corrector to display home time.

The timepiece is completed with a choice of a new blue Sfumato calf leather strap with white stitching, or with a new vintage bi-material technical bracelet made of matt, satin-finished titanium and polished stainless steel. A choice of hand-crafted “NATO” straps are also available as an accessory that can be purchased in Montblanc boutiques or via the brand’s e-shop.

Design Codes

On the Geosphere watch, the world’s Seven Summits and the Mont Blanc are marked on the turning globes with blue dots. They are also engraved on the case back along with a unique drawing of the Mont Blanc mountain, a compass, and two crossed ice pick-axes. Housed in a 42 mm case, the Montblanc 1858 Geosphere comes in grade-5 titanium which is robust and durable, as the material is resistant to superficial scratches. 

It also has a low thermal conductivity and is light for utmost comfort on the wrist. This high-tech material also provides a dark look, matching ideally with the spirit of mountain exploration. The case is composed of a fluted, bi-directional stainless steel bezel that has been enhanced with a shiny blue ceramic and shows the four engraved luminescent cardinal points.The dial comes in a smoky blue colour that is combined with icy white elements for a very cold and modern tool-watch look.

Moreover, the timepiece includes all the design codes typical of the 1858 collection with Arabic numerals and indexes, the authentic Montblanc logo from the 1930s, domed cathedral-shaped hands, as well as a railway track. For utmost readability, the day/night indicator, the cathedral- shaped hands, the indexes, the compass indications and the hemisphere globes are all coated with white SuperLumiNova® that is applied by hand.

Specific designs codes

Special attention has been paid to the black dial with its map of the Northern Hemisphere and 24 meridians made out of luminescent material. The SuperLumiNova®-coated elements are subtly visible during the day, while at night, the 24-hour numerals, indexes and single hour hand take on a mysterious glow, making the timepiece truly distinctive.

The automatic timepiece comes with a new 42 mm bicolour case made of stainless steel and a bezel made of a special alloy of bronze, providing a vintage aesthetic. The timepiece is completed with a special “Spirit of Mountain Exploration” engraving on the case back.

The Montblanc 1858 Automatic 24H is equipped with a matching black, hand-crafted NATO strap that is made in a traditional 150-year-old strap manufacture in France.

Montblanc 1858 Automatic 24H In the Spirit of Mountain Exploration, the Montblanc 1858 Automatic 24H features a new complication with a 24H indication via a single hand that allows the timepiece to be used both as a timekeeper, to read hours and minutes, and as a compass. The timepiece indicates the time on a 24-hour scale using a red-coloured hand coated in SuperLumiNova® for better readability both day and night. This red-tipped hand not only indicates the time but also acts as a compass. For precision purposes, the compass scale is displayed in a beige-coloured ring that runs around the outside of the dial, with markers for approximately every 5º, and includes the cardinal points in red.

How does it work

The Earth rotates around the Sun every 24 hours, which explains why a timepiece with a 24-hour display is a far more useful tool for finding your way and makes the compass much easier to use. The sun always rises in the East and sets in the West and will indicate South at midday. If you are in the Northern Hemisphere, set your watch at the right time, simply hold the watch horizontally to the ground and rotate it until the extremity of the hour hand is pointing towards the sun. Like this, all the cardinal points on the dial will be correctly aligned. North is located at 24h and South at 12h. If you are in the Southern Hemisphere, you have to consider that the cardinal points are inversed.

Movement Calibre Calibre MB 24.20 

Type of movement

Mechanical movement with automatic winding, 24H display  

Number of rubies

25 

Power reserve

Approx. 42 hours 

Balance

Flat hoop 

Frequency

28,800 A/h (4 Hz) 

Hairspring

Flat 

Displays

Hour and minute single hand from the centreCompass indications

Habilage

Case

Stainless steel with slim curved horns featuring polished and satin- finishing, fixed bezel made of an alloy of bronze 

Crystal

Scratch-resistant, domed box-shaped sapphire crystal with antireflective coating  Back

Stainless steel with “Spirit of Mountain Exploration” special engraving

 Dimensions

Diameter = 42 mm; Height = 11.2 mm

Water-resistance

10 bar (100 m) 

Crown

Fluted, in an alloy of bronze with Montblanc emblem in relief  

Dial

Black with beige-coloured luminescent Arabic numerals, mysterious luminescent Northern Hemisphere map with the 24 meridians, luminescent red-coloured hour and minute single hand, historical Montblanc logo at 3 o’clock  

Wristband

High-quality black NATO strap with special stainless steel pin buckle

Certified by the Montblanc Laboratory Test 500

(* Super-LumiNova® is not a trademark owned by Montblanc)

Montblanc 1858 Automatic 24H

Montblanc 1858 Monopusher Chronograph Limited Edition 1858 The Montblanc 1858 Monopusher Chronograph Limited Edition 1858 is one of the technical pillars of the Maison. In this new version, Montblanc reinterprets a historical Minerva chronograph with its calibre 13.20 from the 1930s. Like on the original timepiece, the 1858 Monopusher Chronograph features a black dial with a beige-coloured railway track, as well as two counters at three and nine o’clock. Matching the overall vintage design, other details include a telemeter scale; beige-coloured SuperLumiNova® numerals; and rose gold-coated, cathedral-shaped hands that are also highlighted with a touch of beige-coloured SuperLumiNova® for better visibility at night.

In the Spirit of Mountain Exploration, the timepieces come in a 42 mm case made of a special alloy of bronze that evolves over time and forms a patina. The timepiece is completed with a special “Spirit of Mountain Exploration” engraving on the case back.

The Montblanc 1858 Monopusher Chronograph Limited Edition 1858 features the calibre MB. 25.12 that indicates elapsed time with a central second hand and a 30-minute counter, both with white-coloured hands to create a contrast with the black dial and allow better readability of the function. The start, stop and reset can be activated through a single pusher integrated into the crown. The timepiece is available with a new matching beige-coloured NATO strap that is made in a traditional 150-year-old strap manufacture in France.

Two other Montblanc 1858 Monopusher Chronograph non limited models are available in stainless steel, one of which comes with a new stainless steel bracelet made of a mix of link shapes – central polished links in the form of grains of rice and satin-finished rectangular links on the outside – and the other which comes with an aged, cognac-coloured calfskin strap.