GMT Balancier Convexe 42.9

• Limited Edition: 22 timepieces.
• Case: Titanium and synthetic sapphire crystal • Three-dimensional, variable geometry bezel with raised engraved text • Synthetic sapphire crystal over the entire periphery of the caseband • Three-dimensional, variable geometry lugs, hand-polished with handfinished straight graining • Transparent back with synthetic sapphire crystal • Titanium security screws • Raised engraving “Architecture 1” and “Greubel Forsey"
• Size: 42.9 mm x 15.10 mm
• Movement: 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
• Function: 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
• Power Reserve: approximately 72 hr
• Water Resistance: 50 m
• Dial: 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
• Caseback: sapphire crystal
• Hands: • Hours and minutes with Super-LumiNova, red triangles • 2nd time zone GMT indicator, red triangle • Small seconds in polished blued steel, flat black polished head
• Strap/Bracelet: 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 logo

Greubel Forsey unveils a new interpretation of its GMT Balancier Convexe – more refined, more wearable, and more complete than ever before.  With a more compact case, an integrated power reserve display, and even more technical and aesthetic finesse, it becomes the purest expression of our GMT complication to date – and the only GMT model in our current collection.

The Terrestrial globe remains the central element of this creation – a miniature Earth rotating in real time over 24 hours, nestled within an amphitheatre-like architecture. Flush with the sapphire crystal, it is surrounded by multiple layers of timekeeping indications: local time, universal time, a second time zone, as well as the distinction between day and night.

– The Convexe case, still sculpted in titanium, is now more compact at 42.90 mm at the caseband for improved wearability.
– A new 72-hour power reserve indicator is seamlessly integrated into the dial, bringing added functionality without disrupting the visual harmony.

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.

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