Nano Foudroyante EWT

• Limited Edition: 11 timepieces
• Case: Tantalum and white gold, Tantalum hand-polished bezel, White gold caseband with hand-finished straight-graining
• Size: 37.9 mm x 10.49 mm
• Movement: hand-wound manufacture caliber
• Function: chronograph, Flying Tourbillon with embedded Nano Foudroyante mechanism
• Power Reserve: One full day, with chronograph engaged
• Water Resistance: 30 m
• Dial: Multi-level in gold, rhodium-coloured, engraved and black lacquered hour-ring and minute-circle with a visual opening for the tourbillon • Small seconds and chronograph minutes counter in gold, polished bevel • Foudroyante, frosted, fractions of seconds engraved and black lacquered
• Caseback: sapphire crystal
• Strap/Bracelet: Non-animal material, hand-sewn • White gold pin buckle, hand-engraved GF logo

The Nano Foudroyante EWT (Experimental Watch Technology) is a major technological leap, comparable to the transition from tower clocks to wristwatches. Originally, horological instruments were large and public. They became transportable (table clocks, marine chronometers), then portable with pocket watches, and finally wearable with wristwatches.  This evolution reaches its peak today with nanomechanics—a revolution Greubel Forsey is pioneering. 

What is nanomechanics? It is the miniaturization of components to the nanometric scale. The mechanism’s energy is managed at the nanojoule scale, significantly reducing the number of components and the overall dimensions. The result is a 37.9mm timepiece that combines the world’s first perpetual Nano Foudroyante with Greubel Forsey’s first flying tourbillon and manual wind flyback. 

The timepiece is engraved with “2004 – 2024” and “20th Anniversary” to mark this milestone.

This timepiece, set in a white gold and tantalum case, will be limited to just 11 pieces