Cover Greubel Forsey Nano Foudroyante wins the Mechanical Exception Watch Prize at GPHG 2025
Greubel Forsey Nano Foudroyante wins the Mechanical Exception Watch Prize at GPHG 2025
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The revolutionary Greubel Forsey timepiece rethinks micro energy management with unprecedented efficiency, precision, and elegance
Greubel Forsey’s Nano Foudroyante won the Mechanical Exception Watch Prize at GPHG 2025 for realising the viability of nanomechanics in a wristwatch. Nanomechanics refers to the management of energy on a nanojoule scale within a mechanical movement, resulting in a significant reduction of energy consumption. Demonstrating this visibly is the foudroyante second, found between 4 and 6 o’clock. This rare complication is rather energy-intensive by nature, with a traditional foudroyante consuming 30 microjoules per jump. In comparison, the Nano Foudroyante only needs 16 nanojoules per jump, reducing energy consumption by a factor of 1,800.
The complication divides each second into six segments, the red hand rotating once per second, driven directly by the oscillations of the 3Hz balance wheel. The visual poetry is further enhanced with a flying tourbillon spinning alongside it, creating an aesthetic guaranteed to enthrall any watch aficionado.
Read more: GPHG 2025: Why Dior nabbed the Jewellery Watch Prize
Above Greubel Forsey Nano Foudroyante in white gold with blue textured rubber strap
Greubel Forsey Nano Foudroyante in white gold with blue textured rubber strap
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The microscopic energy footprint enables a radically lean architecture: fewer than 430 components, a movement measuring only 31 mm across, fitted inside a 37.9mm white gold case, Greubel Forsey’s slimmest yet. The white dial with transferred numerals is protected by a high-domed sapphire crystal.
Limited to 22 pieces, the Greubel Forsey Nano Foudroyante represents revolutionary approach to watchmaking in a charmingly elegant package.
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Brian Cheong leads the watch (Tatler GMT) and jewellery content at Tatler Malaysia, combining sharp editorial insight with years of luxury lifestyle experience. A seasoned journalist in luxury watches based in Kuala Lumpur, Brian had previously helmed World of Watches, Men's Folio and Prestige Malaysia.
