GREUBEL FORSEY – CONVEXE GMT Balancier Convexe Edition

 

GREUBEL FORSEY – CONVEXE GMT Balancier Convexe Titanium Limited Edition 2025

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 GREUBEL FORSEY UNVEILS
THE NEW GMT BALANCIER CONVEXE  

Today, Greubel Forsey has unveiled the new GMT Balancier Convexe. As the Earth takes centre stage within a newly reimagined amphitheatre, the hours, minutes, seconds, second time zone, and universal time indications become both companions and spectators to its quiet revolution.

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The new GMT Balancier Convexe replaces its predecessor entirely – not as a variation, but as a complete reinterpretation. With a redesigned case, an integrated power reserve, and enhanced ergonomics, it becomes the purest expression of our GMT complication to date – and the only GMT model in our current collection.

A refined evolution

This new creation preserves the iconic theatrical architecture of the original GMT Balancier Convexe, while refining its proportions and mechanical layout.

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• The Convexe case, still sculpted in titanium, is now more compact at 42.90 mm at the caseband for improved wearability.

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• A new 72-hour power reserve indicator is seamlessly integrated into the dial, bringing added functionality without disrupting the visual harmony.

Technical enhancements

The movement now contains 496 components, 73 more than its predecessor, attesting to a re-engineering of the calibre to accommodate new displays and improved chronometric performance. 

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Finishing remains uncompromising: the inclined escapement is suspended beneath a flat black polished and barrel polished steel bridge, resting on polished steel pillars. 

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The Terrestrial globe – one of the Atelier’s most emblematic elements – remains, rotating in real time within a layered amphitheatre of time indications.

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On the caseback, a sapphire disc engraved with 24 cities reflects both universal time and summer/winter time, with La Chaux-de-Fonds replacing Paris – a subtle but meaningful shift.

Exclusivity

This new GMT Balancier Convexe will be made in a strictly limited series of 22 timepieces.

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TECHNICAL SPECIFICATIONS

Collection:  CONVEXE

 GMT Balancier Convexe
In titanium
Limited edition
Patented hand-wound movement

• GMT 
• 2nd time zone 
• rotating globe with universal time and day-and-night 
• universal time on 24 time zones • summer and winter time 
• cities observing summer time 
• GMT pusher
• 30° inclined Greubel Forsey balance wheel system 
• hours and minutes • small seconds

Movement
Movement dimensions
• Overall diameter: 37.80mm
• Thickness: 13.80mm
Number of parts
Balance wheel: In-house variable-inertia with 6 gold mean-time screws (12.60mm diameter)
Olived-domed jewels in gold chatons
Number of parts: 496
Escapement platform: 59 parts
Barrels: Two series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
Power reserve of 72 hours
Escapement platform
• Inclined at a 30° angle
• Flat black polished steel, polished bevelling and countersinks, straightgrained flanks
• Polished steel pillars
• Flat black polished and barrel polished steel balance wheel bridge
Gearing
• Involute circle profile
• Inclined gear with profiled teeth on fourth wheel
Displays
 Hours and minutes
 Small seconds
 2nd time zone GMT
 Rotating globe with universal time
 Day-and-night
24 time zones universal time
Summer time, winter time
72-hours power reserve on a sector
Exterior
Case
Titanium with curved sapphire crystal
• Three-dimensional, variable geometry-shaped bezel, hand-polished withhand-finished straight graining
• Profiled lugs, screwed fixing
• Transparent back with curved and high domed synthetic sapphire crystal
• Engraved GMT pusher
• Titanium security screws
• Raised engraving “GMT” and “Greubel Forsey”
Case dimensions
• Caseband diameter: 42.90mm
• Bezel diameter: 44.90mm
• Case height: 15.10mm
• Height on synthetic sapphire crystals: 17.40mm
Water resistance of the case
• Water-resistant 5atm - 50 m - 164f (standard NIHS 92-20/SN ISO 22810:2010)
Crown
• Titanium, polished, frosted and straight-grained, with GF logo
Dial side
Terrestrial globe in titanium, relief-engraved continents, ocean blue treatment
Day-and-night UTC indicator in titanium, engraved and lacquered
GMT indicator in gold
Amphitheatre hour-ring with engraved and lacquered minute-circle
Small seconds indicator in gold
Movement side
• Synthetic sapphire disc displaying city names surrounded by 2 rings (UTC and summer time)
engraved and lacquered, hand matt lapped
• Gold “summer time” plate with limitation number, raised engraving, hand matt lapped
Hands
Hours and minutes, red triangles with Super-LumiNova
2nd time zone GMT indicator, red triangle
Small seconds in polished blued steel, flat black polished head
Strap and clasp
Hand-sewn textured rubber or rubber with text in relief
Titanium folding clasp, engraved GF logo
On demand: 3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF 

🔴 Price  (without VAT), first pieces will be delivered this year.

Rubber strap – EUR 420,760 💰

🔰Limitation 
Limited Edition of 22 pieces.

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Press Release - 2025
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GREUBEL FORSEY SA
For further information: 
Communication Department 
press@greubelforsey.com – +41 79 194 2884
Eplatures-Grise -16 P.O. Box 670 
2301 La Chaux-de-Fonds - Switzerland
+41 32 925-4545
+41 32 925-4502
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GREUBEL FORSEY – HAND MADE 2 Edition

 

GREUBEL FORSEY – HAND MADE 2 White Gold 40,9 mm Limited Edition 2025

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 GREUBEL FORSEY UNVEILS
HAND MADE 2: THE ULTIMATE
EXPRESSION OF TRUE HAND WATCHMAKING

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Hand Made 2 embodies the ultimate pursuit of hand watchmaking. Every component, whether
visible or hidden, is created, finished, and assembled by hand with unprecedented rigor. Over 5,000 hours are required to complete the 270 components of this four handed 40.9mm time- piece , 96% of which are entirely handmade. Only two to three such timepieces can be crafted each year, our commitment to the highest level of craftsmanship.

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In a highly mechanised industry where the concept of "hand made" is often opaque, Greubel Forsey stands out with a transparent and very strict definition, showcasing exactly what "hand made" truly means to reach its standards.

WHAT HAND MADE MEANS
TO GREUBEL FORSEY

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For Greubel Forsey, "hand made" entails:

. All components, except five — sapphire crystals, case gaskets, spring bars, mainspring, and most
jewels — are crafted by hand using traditional tools such as a precision lathe, a jig-borer, or a pantograph. A major milestone of the Hand Made 2 is the creation of a handcrafted conical jewel for the power reserve indicator, advancing hand-craftsmanship even further.

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. Each component is manually machined with toler- ances of just a few microns, achieving a precision comparable to modern CNC machines.

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. Every component, whether visible or hidden, is meticulously finished by hand.

. Each timepiece is assembled entirely by hand by a single watchmaker.

HAND MADE 2:
PUSHING THE LIMITS

Distinctly Greubel Forsey yet revolutionary, Hand Made 2 pushes technical and aesthetic boundaries.
Its large conical jewel symbolises this pursuit. 

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In its workshop, Greubel Forsey preserves rare skills, develops unique expertise, and passes it on to future generations with an inexhaustible passion for innovation.

MASTERING
THE BALANCE SPRING

Since 2012, Greubel Forsey has been rediscovering traditional techniques for crafting balance
springs, a key component for timekeeping precision. Each spring is made from a carefully selected alloy for its unique properties and individually adjusted by an expert watchmaker. 

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This complex process, including coiling, cutting, and manually adjusting terminal curves, ensures perfect synchronisation with the balance wheel.

TIMELESS AESTHETICS
AND EXCEPTIONAL RARITY

Hand Made 2 combines 18th-century elegance with Greubel Forsey’s signature modern innovation.
The barrel and balance bridges create remarkable harmony, each enhanced by five artisanal finishes:
frosted, black-polished, straight-grained, polished flanks and bevels, and the polished chamfers accented by olive-domed jewels set in gold chatons.

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The hand-frosted German silver contrasts beautifully with the Grand Feu enamel dials for the hours, small seconds, and power reserve. Blued steel hands, deep red rubies, golden reflections of wheels and barrels, and the bright edges of polished steel bridges bring a vibrant chromatic depth to every component. 

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Beneath a thin bezel, the architectural movement opens up to the observer, offering a unique perspective throughout the timepiece. The case back extends this harmony, revealing a perfectly coherent mechanism where every detail reflects extraordinary handcrafts-manship. 

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The Hand Made 2 is not merely a watch; it is an invitation to admire excellence through a mechanical work of art.

EXCEPTIONAL RARITY

Each year, Greubel Forsey’s Hand Made workshop can complete only two to three Hand Made 2 time-pieces, making it one of the rarest and most exclusive creations from the Greubel Forsey Atelier.

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🔰 Limitation 
Limited Edition of 3 pieces (maximum of 2 to 3 pieces per year).

 🔴 Price  CHF 620,000💰

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Press Release - 2025
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GREUBEL FORSEY SA
For further information: 
Communication Department 
press@greubelforsey.com – +41 79 194 2884
Eplatures-Grise -16 P.O. Box 670 
2301 La Chaux-de-Fonds - Switzerland
+41 32 925-4545
+41 32 925-4502
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GREUBEL FORSEY – Nano Foudroyante EWT Edition

GREUBEL FORSEY – Nano Foudroyante EWT Tourbillon Tantalum / White Gold 37,9 mm 20th Anniversary Limited Edition 2024

 GREUBEL FORSEY UNVEILS ITS 10TH FUNDAMENTAL INVENTION

To celebrate the 20th anniversary (2004-2024), Greubel Forsey presents its 10th Fundamental Invention: the Nano Foudroyante EWT. The mechanism’s energy is managed at the nanojoule scale, significantly reducing the number of components and the overall dimensions. 

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The result is a 37.9 mm timepiece that combines the world’s first perpetual Nano Foudroyante with Greubel Forsey’s first flying tourbillon and manual wind flyback. This timepiece, set in a white gold and tantalum case, will be limited to just 11 pieces.

LEGACY OF INNOVATION

The first Fundamental Invention by Robert Greubel and Stephen Forsey was launched in 2004, marking the Atelier’s commitment to research and invention. For over 20 years, this focus has been at the heart of all Greubel Forsey’s Fundamental Inventions and timepieces. Today, Greubel Forsey’s research is even more fundamental, aiming to completely rethink the approach to the conception of a timepiece. This endeavor demonstrates a major technological leap, comparable to the transition from tower clocks to wristwatches.

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Originally, horological instruments were large and public. Over time, they became transportable (table clocks, marine chronometers), then portable with pocket watches, and finally wearable with wristwatches. This evolution reaches its peak today with nanomechanics — a revolution Greubel Forsey is pioneering. 

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Thus, Greubel Forsey introduces its 10th invention: the Nano Foudroyante. This new Fundamental Invention is the most technologically disruptive — not only for Greubel Forsey but also for the universe of mechanical watchmaking.

NANOMECHANICS: A NEW HORIZON

What is nanomechanics? It is a realm beyond the miniaturization of components to the nanometric scale. When we talk about nanomechanics, we’re talking about controlling energy on a nanojoule scale within a mechanical movement. 

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This revolution in energy management within a caliber allows for a drastic reduction in both energy consumption and the number of components.

A REVOLUTIONIZED MECHANISM

To demonstrate the feasibility of nanomechanics, Greubel Forsey has reinvented the foudroyante second. Its hand completes one revolution per second, dividing it into segments according to the movement’s frequency. In this Nano Foudroyante, each oscillation of the 3 Hz balance wheel produces two beats, totaling six beats per second, allowing the hand to divide the second into six distinct segments. This is an energy-intensive complication by nature. 

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However, by managing energy on a nanojoule scale, Greubel Forsey has radically rethought its design and construction. Compared to a traditional foudroyante that consumes 30 μJ (microjoules) per jump, the Nano Foudroyante operates with only 16 nJ (nanojoules) per jump, reducing energy consumption by a factor of 1,800. 

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The mechanism’s volume is therefore reduced by 90%. Here, the focus is not just on measuring fractions of a second but as a proof of concept for a completely new approach to watchmaking, which is why this Nano Foudroyante was chosen to be a perpetual display.

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It eliminates the entire gear train required in a traditional foudroyante to divide the second, as the information is sourced directly, distributing and managing the energy from the movement through a minimal number of low-inertia wheels. 

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Fewer components mean less volume: this Nano Foudroyante EWT is very compact, with 428 components, and the movement measures no more than 31 mm in diameter within a 37.9 mm case (the smallest ever built by Greubel Forsey).

HOROLOGY AT ITS PEAK

There’s more: true to Greubel Forsey’s passion for the tourbillon, this Nano Foudroyante is integrated within a flying tourbillon — the first ever made by Greubel Forsey. Finally, an additional innovation: although this flying tourbillon rotates constantly, the Nano Foudroyante’s dial remains permanently aligned towards twelve o’clock for optimal readability.

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Together with the flyback, these three features complete Greubel Forsey's 10th Fundamental Invention: a Nano Foudroyante, set within a flying tourbillon, with an oriented reading axis.

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This is just the foundation and not the end result: this 10th Invention is powered by a manual-winding flyback movement. This complication presented by Greubel Forsey, includes column-wheel control within the strong architectural design and exceptional finishing, a signature of Greubel Forsey.

A LIMITED EDITION MASTERPIECE

The timepiece will be made in a limited edition of just 11 pieces in this inaugural, refined version, emphasizing its disruptive technical character and highlighting the personality of a timepiece brilliantly conceived in the EWT (Experimental Watch Technology) laboratory.

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The white gold case offers an additional surprise, with a bezel and back crafted from tantalum — a first for Greubel Forsey, who have never used this material before. Known for its gray-blue sheen and complexity in machining and finishing (with a melting point above 3000°C), tantalum requires rare expertise. 

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The Atelier also preserves its essential aesthetic signatures, including polished relief engravings of “Nano Foudroyante” and “Greubel Forsey” on a hand-hammered background, hand-satin-finished white gold, and a highly architectural movement. This masterpiece displays the movement around its column wheel with rare 3D monobloc geometry, visible through the back. 

The timepiece is engraved with “2004 – 2024” and “20th Anniversary” to mark this milestone.

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 TECHNICAL DETAILS 

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Nano Foudroyante EWT
In white gold and tantalum
Hand-wound movement with 2 patents

MOVEMENT

NUMBER OF PARTS
• Movement: 428 parts
• Tourbillon cage: 142 parts
NUMBER OF JEWELS
• 42
• Olived-domed jewels in gold chatons
CHRONOMETRIC POWER RESERVE
• One full day, with chronograph engaged
FREQUENCY • 21’600 vibrations/hour
TOURBILLON
• Flying Tourbillon with embedded Nano Foudroyante mechanism
• Foudroyante dial, constant vertical indication
• Titanium cage bridges, circlar-grained, polished bevelling, straight-grained flands with engraved GF logo
• Platinum counterweight

EXTERIOR 

CASE
• Tantalum and white gold with high domed synthetic sapphire crystal
• Tantalum hand-polished bezel, transparent tantalum back
• White gold caseband with hand-finished straight-graining
CASE DIMENSIONS
• Diameter: 37,90mm
• Height: 10,49mm
WATER RESISTANCE OF THE CASE
• Water-resistant 3atm - 30m - 100ft (standard NIHS 92-20/SN ISO 22810:2010)
DIAL SIDE
• Multi-level in gold, rhodium-coloured, engraved and black lacquered hour-ring and minute-circle with a visual opening for the tourbillon
• Small seconds and chronograph minutes counter in gold, polished bevel
• Foudroyante, frosted, fractions of seconds engraved and black lacquered
STRAP AND CLASP
• Non-animal material, hand-sewn
• White gold pin buckle, hand-engraved GF logo

🔰 Limitation 
Limited Edition ✅ Only ❱❱❱ 11 pieces.

🔴 Price on Request 💰

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Press Release - 2024
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GREUBEL FORSEY SA
For further information: 
Communication Department 
press@greubelforsey.com – +41 79 194 2884
Eplatures-Grise -16 P.O. Box 670 
2301 La Chaux-de-Fonds - Switzerland
+41 32 925-4545
+41 32 925-4502
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GREUBEL FORSEY – CONVEXE Balancier 3 Titanium 41.5 mm Edition

GREUBEL FORSEY – CONVEXE Balancier 3 Titanium  41.5 mm Limited Edition 2023

Greubel Forsey opens a new gateway into its world, the Balancier 3.

This timepiece joins the Convexe collection, offering a more refined look. Featuring a majestic arch bridge and crafted over multiple levels, the openworked titanium piece is available in either black or blue finish. Both more rebust and more affordable while reinforcing the high chronometric standards and finishes that are synonymous with the Atelier.

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Almost 20 years were required for Greubel Forsey to embark on this challenge to produce an entirely new, more accessible timepiece with its own unique identity. To achieve this, the Atelier needed to start from scratch. How do you create a timepiece with a comfortable diameter into which the Atelier Manufacture movement can fit? How can you make the piece more affordable when it still has to be 100% hand finished? The Balancier 3 answers all of these questions.

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First comes the style. From the outset, the piece is characterised by its three prominent bridges: the first of which houses the barrel, the second for the large balance wheel, and the third, and most striking of all, is attached to the seconds counter and supports the hour and minute hands.

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All these bridges feature Greubel Forsey’s signature hand finishes: a curved polished surface, polished bevels and hand-polished screws. Each bridge includes its share of sharp internal angles and a curved profile that make the hand finishes particularly complex—details that will certainly be appreciated by collectors.

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This design joins the Convexe collection. The Balancier 3 features the iconic case, even slimmer than before. Its lugs no longer have screws—a first for Greubel Forsey. The Convexe case is profiled on both the back and display sides, making it truly unique in fine watchmaking. Offering total comfort, the piece naturally follows the curvature of the wrist. On the dial side, the double curvature dips towards each end of the strap, creating the highly aesthetic volumes that the movement uses to deploy itself.

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Then, there's the movement. It imbues the timepiece with a dynamic, modern style and offers impeccable chronometry while still becoming Greubel Forsey's most affordable creation. To achieve this, Greubel Forsey once again called on the considerable expertise of its teams. 

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The idea was to create a simple, streamlined and contemporary design that allows you to admire the finish of each of the movement's components. With this in mind, the Atelier focuses on the technical nature of its timepieces: from the source energy to the escapement that drives it, the barrels and the large balance wheel. The essence of the mastery of time.

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The two series-coupled fast-rotating barrels (one turn in 3.2 hours) clearly visible and decorated with the unique rotating graphics design that is becoming a staple of the Convexe collection. Together, they provide a chronometric power reserve of 3 full days. 

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The timepiece will continue to beat for many more hours but perhaps not with the same precise accuracy that Greubel Forsey specifications. The power reserve is shown on the case back for the first time in the Convexe collection.

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On the opposite side, the large balance wheel – “Balancier”, which gives the timepiece its name, can be found between 4 and 6 o’clock. Conveniently integrated into the design, this Greubel Forsey variable-inertia balance is balanced thanks to its 6 gold mean-time screws. 

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It boasts the Atelier's signature large diameter of 12.6 mm, one of the most majestic in contemporary fine watchmaking. Its oscillations echo the small second display at 8 o’clock with its fixed indicator, where it's actually the disc underneath, satin-finished by hand, that rotates and marks the passing seconds.

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And finally, the finishing. The wide bridge supporting the hour and minute hands is the best illustration of this. With its curved, three-dimensional, openworked design, multiple levels, numerous sharp internal angles, and refined arm connecting with the small seconds, it is a true tour de force. Its extremely complex geometry is a perfect match for its hand finishing. 

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This process is reproduced, both sides on the barrel bridge and the balance wheel bridge, which are exquisitely hand-polished and convex like the case that houses them.

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The Balancier 3 is available in a 41,5 mm diameter in two black and blue versions limited to 88 pieces each, with a rubber strap or a Greubel Forsey titanium bracelet upon request.

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 TECHNICAL DETAILS 

Balancier 3 Titanium Limited edition

Hand-wound movement • Hours and minutes • small
seconds • power-reserve • Greubel Forsey balance wheel system

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Movement
Movement dimensions
• Overall diameter: 35.80 mm
• Thickness: 9.03 mm
Number of parts
• Movement: 282 parts
Number of jewels • 43
• Olived-domed jewels in gold chatons 
Chronometric power reserve • 72 hours
Barrels
• Two series-coupled fast-rotating barrels (1 turn in
3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
• Relief-engraved text, circular-grained, black treatment
Balance wheel
• In-house variable-inertia with 6 gold mean-time screws (12.60 mm diameter)
Frequency • 21'600 vibrations/hour
Balance spring
• Phillips terminal curve
• Geneva-style stud
Bridges and main plate
• Titanium
• Frosted, polished bevelling and countersinks, black or blue treatment according to the version
• Multi-level, polished openworked arch bridge, polished bevelling and countersinks
Movement side
• Frosted bridges, polished edges and countersinks
• Gold plate with engraved limitation number, circular- grained, polished bevelling and countersinks, straight- grained flanks
Gearing
• Involute circle profile
Displays
• Hours and minutes, on suspended arch bridge
• Small seconds on disc
• Power reserve on a sector (movement side)

Exterior
Case
• Titanium with curved synthetic sapphire crystal
• Three-dimensional, variable geometry-shaped bezel, hand-polished with hand-finished straight graining
• Profiled lugs
• Transparent back with synthetic sapphire crystal
• Titanium security screws
• Raised engraving "Balancier 3" and "Greubel Forsey"
Case dimensions
• Caseband diameter: 41.50 mm
• Bezel diameter: 43.60 mm
• Case height: 13.35 mm
• Height on synthetic sapphire crystals: 13.55 mm
Water resistance of the case
• Water-resistant 5 atm - 50 m - 164 ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown
• Titanium, polished and straight-grained, with GF logo
Dial side
• Three-dimensional, variable geometry hour-ring with engraved and lacquered minute-circle
• Three-dimensional, variable geometry hour indexes polished, with Super-Luminova
• Light alloy small seconds indicator, circular-grained
Hands
• Hours and minutes, curved profile, polished steel with Super-Luminova
• Small seconds, fixed red triangle
• Power-reserve, in polished steel, flat black polished head
Strap and clasp
• Non-animal material, rubber with texture in relief. titanium folding clasp, engraved GF logo
• On demand: 3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF logo

🔰 Limitation 
Limited Edition of 88 pieces.

🔴 Price : RRP   CHF 160’000💰 

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Press Release - 2023
-----------------------------
-------------------------------------------------
GREUBEL FORSEY SA
For further information: 
Communication Department 
press@greubelforsey.com – +41 79 194 2884
Eplatures-Grise -16 P.O. Box 670 
2301 La Chaux-de-Fonds - Switzerland
+41 32 925-4545
+41 32 925-4502
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