fond boite de montre

FIMM SA is a swiss high level watchmaking manufacture that find place in the district of Jura, in Porrentruy. With its thirty really high qualified employees team and the productions facilities from last generation, the structure produces high level quality to costume the watches from the biggest watches manufactures.

We take over projects that were sometimes born by a simple sketch and we are able to furnish you a high quality product, doesn’t matter if it’s an only piece or a series.

All materials as steel, titanium, palladium, ceramic, tantalum, tungsten and many others are worked from high elaborate processes.

That unusual SME has many process like the conception/design? (CAO), programming (FAO), stamping, mechanical, machining (CNC), turning (CNC), grinding (CNC), polishing or also mounting to be able to produce every/the entire products.

Thanks to its technics and “humans”, FIMM SA became a reference to the subcontracting watches. Always listening to their customers, this manufacture continues to develop its tools and its knowledge to improve its service.

High reactivity, perfect execution quality and high competition are the bases from our politic.


  1. 1981

    Creation from the society by Sir Merçay François. He gives the name Fimm SA to the society. It means “FRANCOIS – IRENE – MERCAY – MICROMECANIC”. Found in Courgenay the society developed switchgear in the manufacture of the textile sector in the first years.

  2. 1985

    The society diversified its activity in the recovery in the detached pieces on IMMOBERDHOF machines half-automatic.

  3. 1989

    The society diversified its activities in the cutting of sprockets on WAHLI machines

  4. 1995

    Sir Merçay bought the first machine with numeric working, a Willemin W130. Component deliveries in the watch sector, precision weaponry and micromechanics.

  5. 2008

    The society is overtaken by Sir Crevoisier Bertrand. Important investments are made to complete the possibilities of programming of the society.

  6. 2010

    Some new machines with numeric work are added. Integration of polishing and washing chain.

  7. 2012

    Integration of turning and termination CNC.

  8. 2017

    Rebirth, Fimm SA moved out in a new and modern building, adapted to the image of the products that are realized. New website online.





Private Label







Watch exterior

Watch movement

Precision micromechanics


logo rjc



16-19 juin2020

EPHJ 2020

We will be present at the seventeenth edition of the EPHJ from 16 to 19 June 2020 at the Palexpo in Geneva.

Photo de brasage

FIMM SA à le plaisir de vous accueillir sur son nouveau site internet.

Photo de l'entreprise

Nouveau locaux

L'entreprise intègre aujourd'hui ces nouveaux locaux à la Rue de la Roche de Mars 16 à Porrentruy.


Rue de la Roche de Mars 16
2900 Porrentruy
Tél. + 41 32 466 70 20
Fax. + 41 32 466 70 24