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Titanium and blue for the Greubel Forsley GMT...
New Models

Titanium and blue for the Greubel Forsley GMT Quadruple Tourbillon

Tuesday, 16 March 2021
By The FHH Journal editors
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The FHH Journal editors

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2 min read

With new materials, new colours and new finishes, this limited edition launches the GMT Quadruple Tourbillon towards unexplored horizons.

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. The mission: to average out positional errors due to gravity in all situa¬tions, 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. A spherical differential transmits the average timing rate of the four tourbillon cages, improving the overall chronometric performance of all the regulating organs.

GMT Quadruple Tourbillon © Greubel Forsey
GMT Quadruple Tourbillon © Greubel Forsey

The GMT Quadruple Tourbillon is radical by design. 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.

GMT Quadruple Tourbillon © Greubel Forsey
GMT Quadruple Tourbillon © Greubel Forsey

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, the rotating terrestrial globe allows for the simulta¬neous 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 case¬back 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). The sapphire crystal window around the equator completes the timepiece, offering a complete view of the Earth in motion, with its continents immersed in the deep blue ocean waters, complementing the exquisite blue finish of the power reserve, hour circle and strap.

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