Greubel Forsey creates the next chapter for the GMT Quadruple Tourbillon with an 11-piece edition of this groundbreaking timepiece in Titanium with striking blue accents.
The GMT Quadruple Tourbillon is radical in all its aspects. First of all, by its construction – the Quadruple Tourbillon is Greubel Forsey’s second Fundamental Invention – which averages out positional errors due to gravity in all situations, especially in stable wristwatch positions.
To achieve this, the original tourbillon has been elevated to realise its full potential: inclined at 30°, doubled and then quadrupled. The result, two synchronised Double Tourbillon 30° mechanisms, where a first cage, inclined at 30° and rotating in one minute, is nested within a second horizontal cage, completing a full rotation in four minutes.
With this exclusive limited edition in titanium with striking blue accents, Greubel Forsey offers an unexpected alternative to the precious metals that High-end watchmaking traditionally favours. Titanium has numerous qualities: it is both stronger and lighter than steel, while also being extremely resistant to corrosion and magnetic fields.
The circular-grained hour ring with polished bevels and 72-hour chronometric power reserve indication appear for the first time in a brilliant blue. The mainplate is now frosted and spotted with polished bevelling, countersinks and straight-grained flanks, executed in a grey finish.
Planet Earth, set near eight o’clock, shines in a new light with the blue livery. An original Greubel Forsey creation from ten years ago (2011), the rotating terrestrial globe allows for the simultaneous display of several different time zones: on the dial side, with a 24-hour ring around the Earth, for Day/Night indication and on the caseback side, displaying 24 major cities their respective time zones while distinguishing between those which use summer time (on a light coloured backdrop), and those which do not (on a dark backdrop).
GMT Quadruple Tourbillon
11 pieces in titanium
Hand-wound movement with 3 patents
GMT • 2nd time zone • rotating globe with universal time and day-and-night • universal time on 24 time zones • cities observing summer time • lateral window showing the equator and southern hemisphere • GMT pusher • Quadruple Tourbillon • hours and minutes • small seconds • power-reserve
NUMBER OF PARTS
• Movement: 705 parts
NUMBER OF JEWELS
• Olived-domed jewels in gold chatons
CHRONOMETRIC POWER RESERVE
• 72 hours
• 21’600 vibrations/hour
• Inner tourbillons inclined at a 30° angle, 1 rotation per minute
• Outer tourbillons: 1 rotation in 4 minutes, 1 gold counterweight per double cage bearing the individual number of the timepiece
• In titanium with asymmetrical convex synthetic sapphire crystal
• Diameter: 46,50mm
• Height : 17,45mm
• Multi-level in gold, anthracite colour
• Gold hour-ring and power reserve
• Gold hour markers
STRAP AND CLASP
• Rubber or hand-sewn alligator
• Titanium folding clasp, engraved with the GF logo
For more information please visit https://www.greubelforsey.com