From tower clocks to wristwatches, the history of clock- and watch-making over the past four centuries chronicles the ever-increasing miniaturisation of mechanisms. Up until now, the power needed to drive a wristwatch mechanism has been a limiting factor in terms of design and innovation.

Greubel Forsey’s fundamental work on Mechanical Nano, based on the mastery of energy and available space, is once again confirmed and now applied in a watch mechanism.

In the process of developing the 180-day power reserve movement, the decision was taken to apply Mechanical Nano to the foudroyant jumping seconds mechanism. This watchmaking complication consists of a hand that makes one rotation every second to indicate the fractions of a second.

For over ten years, Greubel Forsey’s EWT (Experimental Watch Technology) Laboratory has been working to push the boundaries of mechanical watchmaking and has had particular success in the domain of the Mechanical Nano project. Thanks to this totally new concept and following the recent application of patent No. EP 3220207 A1, Greubel Forsey is unveiling the first Nano Foudroyante EWT.