5N red gold
Anthracite dial

The GMT is a first, both for Greubel Forsey and the history of GMT watches. After extensively exploring the world of the tourbillon and inventing ground-breaking solutions for improving timekeeping precision, Greubel Forsey has added a second time zone, traditionally denoted as 'GMT'.

The Inventor Watchmakers have gone beyond the conventional means of displaying this practical and highly-valued complication with a rotating terrestrial globe allowing the continents to be cross-referenced with the 24-hour, day-and-night indicator on the equatorial chapter ring to offer an intuitive view of time all over the world. A lateral window integrated into the caseband at 8 o’clock floods the globe with light to symbolise daytime and reveals more of the southern hemisphere.

The globe is complemented by the second time zone (GMT) at 10 o’clock, small seconds subdial and sectorial power-reserve indicator.

The display back reveals a 'worldtime' disc synchronised with the globe and bearing the names of 24 cities, each representing one of 24 world timezones. Cities using summertime are on a light background and their timezone is easily referenced on the inner ring, while a yellow gold disc symbolises the sun at midday.

The GMT movement comprises 436 components housed in an asymmetrical, 43.5 mm diameter case. Both poetic and technical, this timepiece features the Tourbillon 24 Secondes regulator, with its fast rotating 25° inclined tourbillon, while two coaxial mainspring barrels connected in series provide the GMT with 72 hours of optimal running time.

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