In this video, TheWatchesTV Founder Marc André Deschoux sits down with Greubel Forsey co-founder Stephen Forsey to talk about the Greubel Forsey GMT Quadruple Tourbillon.
Forsey reveals interesting facts, while the macro footage also reveals closeups of the charming three-dimensional globe, the “iconic” side view of the case revealing this globe in a side window, and the amazing finishing on the individual components for which Greubel Forsey is renowned.

Stephen Forsey pointing out the finer details of the Greubel Forsey GMT Quadruple Tourbillon
Here TheWatchesTV allows us to take a deep-dive view of the ultra-complicated Greubel Forsey GMT Quadruple Tourbillon with Stephen Forsey, and no corner of this timepiece is left unturned (or unfilmed).
As Marc André says, “This timepiece is a condensed version of what Greubel Forsey is all about: extreme technicality and extreme finishing.”
For my immediate take on the GMT Quadruple Tourbillon following its debut in March 2019, please read Greubel Forsey GMT Quadruple Tourbillon: A Revolving Earth With Four Tourbillons In Orbit.
Quick Facts Greubel Forsey GMT Quadruple Tourbillon
Case: 46.5 x 17.45 mm, white gold
Movement: manual winding GF caliber with four tourbillons arranged in two sets; 805 components; variable inertia balance; three serially operating fast-rotating spring barrels; 72-hour power reserve 3 Hz/21,600 vph frequency
Functions: hours, minutes, small seconds; power reserve indication, second time zone adjustable in one-hour increments, world time with Daylight Savings Time, day/night indication
Limitation: 11 pieces in white gold; 66 pieces in total to be released
Price: 780,000 Swiss francs excluding applicable taxes
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