Thursday, June 26, 2025

GREUBEL FORSEY – CONVEXE GMT Balancier Convexe Edition

 

GREUBEL FORSEYCONVEXE 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.

 Click , to see the large size. BIG FOTO 

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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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