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Mauron Musy

Mauron Musy is an independent and family-owned brand established in Switzerland’s Broye Valley, with a DNA steeped in industrial design and mechanical technology. With its philosophy based on both watch exterior complications and Swiss craftsmanship, it stands out for its invention of the first mechanical direct-seal gasket-free water-tightness technology mechanical sealing system.


Mauron Musy is the brainchild of Eric Mauron and his son-in-law Christophe Musy. Eric took over his father’s mechanics workshop in the town of St. Aubin, in the Swiss canton of Fribourg, which produces components for the Swiss watch industry. In 2013, the decision was taken to make watches for their friends.

The project subsequently grew from friends and family to a hyperlocal crowdfunding approach, which saw the first Mauron Musy owners coming from the local region of Broye, which extends southwards from the southern shore of Lake Neuchâtel. At the heart of the watches is Mauron Musy’s patented nO-Ring® gasket-free technology. The name is a play on words, adding a single letter to negate the widely used O-ring gaskets that guarantee water resistance in a watch. The nO-Ring® system uses a purely mechanical seal without any synthetic material, greatly improving the lifespan of the watch (the brand recommends service intervals of 7 years – the longest in the industry). Water resistance is even guaranteed with the crown pulled out in the winding position – it can even be operated underwater.

Mauron Musy controls the entire manufacturing process, from research and development to design, manufacturing of case parts, dials and final assembly and adjustment. The brand’s in-house exclusive movement was developed in collaboration with La Joux-Perret.

Christophe Musy first meets Eric Mauron when he worked as an intern at Eric’s company, Régis Mauron SA.
The bond between the two men strengthened when Christophe married Eric’s daughter.
The Mauron Musy brand is established in the Broye Valley.
The unique Mauron Musy nO-Ring® waterproofing system was patented.
Mauron Musy presents the new Armure collection with its exclusive in-house movement made by La Joux-Perret.

Mauron Musy places considerable importance on keeping the entire supply chain for its watches within Switzerland’s borders. It prefers the “Swiss Crafted” appellation rather than “Swiss Made” to underscore its code of ethics, in which there is no room for cost considerations. All the elements in its watches are developed, produced and assembled in Switzerland.



With its unmistakable and imposing case, designed and produced entirely in-house by Mauron Musy, the Armure means business. This robust watch is water resistant to 300 metres and is equipped with the highly technical and patented nO-Ring® technology, which requires 36 technical elements, compared with just 10 for the sealing on other watch cases.