GMT Quadruple Tourbillon
Themes:
Technical
Specificities:
Astronomical Indications, Tourbillon, Time Zones
Driven by creativity, unafraid to break new ground, Robert Greubel and Stephen Forsey confirm their love of three-dimensional architectures with this exceptionally complex timepiece. This first edition in white gold, limited to 11 of the total 66 pieces, brings together a quadruple tourbillon and a GMT function with a spinning terrestrial globe that displays three time zones in addition to universal time. As a first innovation, in order to save space and reduce volume, the four tourbillons nest in pairs. A spherical differential averages the rate of the two regulators for optimal timekeeping precision. The second original mechanism is the GMT function, materialised as a miniature terrestrial globe that makes one full rotation in 24 hours. Turning the watch over reveals the perpetual circumvolutions of the tourbillons, inclined at a 30° angle, next to a third time zone indication with the names of world cities.
Function
- Function Hours, Minutes, Small Seconds
Complication
- Complication Multiple Time Zones, Power-Reserve Indicator, Day/Night, Inclined Tourbillon, Multiple Tourbillons
Movement
- Energy source Manual
- Number of components 705
- Power reserve 72 hours
- Shape Round
- Number of jewels 84
- Diameter 39.5 mm
- Thickness 13 mm
Case
- Shape Round
- Material White gold
- Thickness 17.45 mm
- Diameter 46.5 mm
- Back Sapphire
- Water resistance 30 m
Dial
- Colour Grey, Black
Strap
- Material Alligator
- Colour Black
- Fastening Folding clasp
Craft
- Limited edition 11
Indicated price
- Indicated price CHF 780 000.00