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Différentiel d’Égalité
Robert Greubel and Stephen Forsey first unveiled their invention at Baselworld 2008 as part of the EWT Laboratory and then presented a more advanced...
version of a technical demonstrator at SIHH 2010. Since then, further exciting paths have been explored to help optimise accuracy in this new timepiece. The Différentiel d’Égalité enables steady distribution of power from the mainspring barrel to the regulating organ, which maintains a constant balance amplitude during the 60 hours of the power reserve.
Diameter: 44.00 mm
Material: White gold with high domed synthetic sapphire crystal
Water Resistance: 3 atm - 30 m - 100 ft
Movement: Hand-wound movement
Power Reserve: 60 hours +/- 10%
Bracelet: Hand-sewn, alligator
Dial: Multi-level synthetic sapphire hour-ring, lacquered galvanic growth hour indexes, engraved and lacquered minutes and small seconds