Mauron Musy

GMT Sport

Case shape
Case material
Bracelet strap
Leather, Rubber
Folding buckle
Dial finish
Textured cast iron and ceramic
Water resistance
300 m
ø 44 mm
13 mm
Self-winding mechanical
Power reserve: 55 h, 28800 variations / hours
Hours, Minutes, Seconds, Date, Dual time
Launch date
Price incl. VAT
13'700 CHF


Inspired by the past, shaping the future

The handsome, sturdy and sophisticated new GMT SPORT timepiece created by MAURON MUSY takes the ARMURE collection into new worlds: Sport & Travel.

This new model, certified "SWISS CRAFTED" and strongly inspired by racing cars, is equipped with a second 24-hour time zone engraved on a titanium-ceramic bezel.

The sporting spirit and a nO-Ring® case

Entirely crafted in titanium and recognisable by its ultra-mechanical DNA, this GMT SPORT model is the ideal avant-garde partner for all settings. Its industrial design and brushed finishes endow it with a unique style that goes equally well with a driver's helmet or a gentleman's suit.

The hybrid ceramic and titanium bezel features a 24-hour scale enabling dual-time readings, while the colour difference marks the boundary between day and night.

The entirely in-house made case represents an authentic watch exterior complication in its own right and a world-exclusive feature. MAURON MUSY is the only watch brand in the world to have developed a mechanical gasket-free water-tightness system completely free of the costly maintenance associated with polymer ageing. This patented nO-Ring® method of mechanical gasket-free water-resistance, featuring a design whose very essence is intrinsically linked to the technology involved, requires 36 highly technical elements and ensures a waterproof seal guaranteed to 300 metres. 

This robust and technological MU04 GMT SPORT model is undoubtedly the first watch with a 5-year warranty that is completely maintenance-free.

The dial is machined in a single operation using state-of-the-art laser technology. It features a very rough cast iron texture inspired by car engines. In the same spirit as the movement bridges, the hour-markers and cartouches are machined using the champlevé technique highlighting the polished script appearing in relief. The raised numerals light up in the dark thanks to a luminescent ceramic that instils a very sporty yet highly functional spirit. Five apertures offer a sporadic view of the date disc and these indexing changes.

The 60-minute scale is engraved on an imposing sloping inner bezel ring circling the dial, while a small speedometer-like 60-second counter appears at 9 o’clock. The latter is deeply recessed on a finely microblasted structure, again highlighting the raised numerals.

The sporty wheel rim-style hands are openworked as much as possible in order to ensure a transparent view of the watch face.

About Calibre MM01-GMT

This mechanical self-winding movement developed in collaboration with Manufacture La Joux-Perret is endowed with an optimal 55-hour power reserve. The MM01-GMT calibre drives the hours, minutes, small seconds at 9 o'clock, date at 3 o'clock and 24-hour dual-time indications. It boasts unique high-end decoration, featuring bridges hollowed and microblasted in the centre, satin-brushed on the periphery and polished on the chamfers so as to reveal the various inscriptions in relief.


Founded in 2013 in the Broye Valley, in the heart of the Three Lakes region at the foot of the Swiss Jura, the MAURON MUSY brand was born from the passion of two men: Eric Mauron and Christophe Musy. Driven by the same determination, the two experts in precision mechanics took many months to develop and ensure the reliability of the patented nO-Ring® technology, a real breakthrough innovation that guarantees a perfect gasket-free seal. These pioneers of the watchmaking industry thus set their own course, outside the traditional circuits, driven by constant concern to offer "Swiss Crafted" products. An appellation certifying that 100% of the watch was designed and produced and in Switzerland. Much more than a label, “Swiss Crafted” corresponds to an industrial manifesto defended by MAURON MUSY.