
JEAMBRUN MOVEMENTS
JEAMBRUN WATCH MOVEMENTS — MECHANICAL CHRONOGRAPHS ASSEMBLED & REGULATED IN FRANCE
Modern Jeambrun movements are assembled, adjusted, and regulated in France, continuing a legacy of precision watchmaking adapted to contemporary standards.
Wolbrook stands as a founding and creative force behind this revival, shaping Jeambrun as both a movement platform for its own tool-watches and a resource for independent watchmaking.
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THE PS 6402 CHRONOGRAPH CALIBRE
Beating at 28,800 vibrations per hour (4Hz) with a 55-hour power reserve, the Jeambrun PS 6402 movement features a skeletonized balance bridge, enhancing both visual depth and appreciation of the regulating organ, while contributing to a more contemporary mechanical expression.

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CHRONOGRAPH ARCHITECTURE & FINISHING
This deep blue signature is echoed throughout the movement with heat-blued screws, creating a coherent visual and technical continuity that reflects both control and refinement.
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JEAMBRUN MOVEMENTS SIGNATURE:
ARMURE DE FRANCE
More than decoration, it is conceived as a mark of structure and intent: a visible expression of the principles behind Jeambrun movements — quality, standardization, and long-term reliability.
In this sense, Jeambrun — together with the “Armure de France” pattern — acts as a trademark in its original meaning: a commitment to what stands behind the movement, ensuring consistency, serviceability, and trust across both watchmakers and owners.
Jeambrun is about reinstating an industrial logic — where design, engineering, and identification converge to serve durability and control.

JEAMBRUN & PCK: ENGINEERING & INDUSTRIAL PARTNERSHIP
PHILOSOPHY & APPROACH
Jeambrun was revived to expand the possibilities of French watchmaking through a competitive and pragmatic approach — not by opposing existing models, but by complementing them with a scalable and efficient alternative.
Designed as a collective platform, it provides a shared foundation to support brands, train watchmakers, and strengthen the ecosystem.
The PS 6402 is developed in collaboration with PCK (Peacock Watch Industry Group) — a vertically integrated manufacture founded in 1957 in Dandong, China. With over 100 technical patents and decades of experience, PCK delivers reliable, industrialized movements to leading international watch brands.

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ENGINEERING & INDUSTRIAL MODEL
PCK supplies the movement as a kit (ébauche) — a proven industrial base on which Jeambrun performs assembly and regulation, with further customization progressively integrated.
Jeambrun, together with Wolbrook, defines the engineering specifications and customization design, ensuring full control over performance, architecture, and intended use.
By focusing on complications, Jeambrun enables independent brands to access a level of mechanical sophistication often out of reach.

FROM MOVEMENT TO CHRONOGRAPH
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Jeambrun and the “Armure de France” pattern are registered trademarks, ensuring traceability, consistency, and long-term reliability.