Robust, sporty, and sleek, yet also refined, intriguing, sophisticated: the new MAURON MUSY ARMURE MU03 automatic watch is a world of its own.

Equipped with nO-Ring® mechanical direct-seal gasket-free water-tightness technology, the latest addition to MAURON MUSY is not only water-resistant to 300m, but also splash-proof and easy to handle under water.

MAURON MUSY ARMURE MU03 automatic watch

Entirely attired in anti-allergenic titanium, immediately recognizable by its industrial design and brushed finishes, it is just as well teamed with adventurers’ gear as with an evening outfit. This intrinsically noble model houses an exclusive Manufacture movement. The MAURON MUSY ARMURE MU03 watch comes with a maintenance-free five-year guarantee.

MAURON MUSY Armure Mu03-104 White
MAURON MUSY Armure Mu03-104 White

The in-house mechanical self-winding movement of this 2019 model is endowed with an optimal 55-hour power reserve. This exclusive Calibre MM01 was developed in collaboration with the Manufacture La Joux-Perret.


Driving the hours, minutes, small seconds and date functions, it features a unique high-end decoration: for the first time at MAURON MUSY, the bridges and oscillating weight have been hollowed out and microblasted in the center, satin or sunburst-finished around the rim, in order to highlight the various inscriptions appearing in relief.

MAURON MUSY ARMURE MU03 automatic watch case back

Also featured on the case-back, this extremely sophisticated finish endows the model with a resolutely industrial character.

MAURON MUSY ARMURE MU03 automatic watch with blue dial

The likewise entirely in-house made case represents an authentic watch exterior complication in its own right. MAURON MUSY is the only watch brand in the world to have developed a mechanical gasket-free water-tightness system. The result is a watch completely free of the costly maintenance associated with the ageing of these polymers.

MAURON MUSY Armure Mu03-103 Graphite
MAURON MUSY Armure Mu03-103 Graphite

Inspired by the mechanical principle of the clamp brace, the patented nO-Ring® technology requires 36 highly technical elements, compared to about ten components for a traditional case. The highly specific design of the ARMURE MU03 is a direct result of this innovation, presented as a world premiere in 2015.

MAURON MUSY Armure Mu03-105 Brown
MAURON MUSY Armure Mu03-105 Brown

On the front side, the in-house dial features a sandwich structure composed of two superposed metal plates. The upper part features a finely microblasted surface finish and a curved snailed pattern in the center and on the small seconds counter.

MAURON MUSY Armure Mu03-211 Light Blue
MAURON MUSY Armure Mu03-211 Light Blue

In the same spirit as the movement bridges, the hour-markers and cartouches on the lower dial are machined using the champlevé technique, highlighting the polished script appearing in relief. As for the case, its angles have been softened and its surfaces satin-brushed.

MAURON MUSY Armure Mu03-101 Black
MAURON MUSY Armure Mu03-101 Black

The MU03 ARMURE is delivered with two rubber and leather straps featuring a tool-free change system.

The retail price of MAURON MUSY Armure Mu03 watch is CHF 11,700  for stainless steel version. The black DLC models come in the price range of CHF 12,300 – 12,500.

Technical details

Model: MU03 ARMURE

Exclusive self-winding Calibre MM01 in-house made by La Joux-Perret
33 mm in diameter
6.55 mm thick
25 jewels
Frequency of 28,800 vph (4 Hz)
55-hour power reserve
149 components
Polished steel Swiss lever escapement
Gilded Glucydur balance wheel

Central displays of the hours and minutes
Small seconds at 9 o’clock
Date appearing through a window between 4 and 5 o’clock

Finishing and decorations
Snailed and hollowed bridges with micro-blasted structure, anthracite NAC coating
Diamond-polished angles
Micro-blasted mainplate, anthracite NAC coating
Sunburst and nickel-plated pallet bridge
Rhodium-plated and circular satin-brushed gear wheels
Steel screws with polished heads
Snailed tungsten oscillating weight with anthracite NAC coating

Grade 5 titanium
44 mm in diameter
14 mm thick
36 components
Glare proofed sapphire crystal and back
Water-resistant to 300 m (30 ATM)

Sandwich-type structure composed of two superimposed metal plates
Micro-blasted texture
Central domed snailing
Polished champlevé hour-markers and cartouches, hollowed by chemical engraving
Diamond-polished hands

Delivered with two leather and rubber straps enabling toolfree interchangeability
Folding clasp in grade 5 titanium

Specific features
Five-year guarantee
Stamped with the “Swiss Crafted” inscription (meaning 100% made in Switzerland)
nORing® technology by MAURON MUSY


  • Armure Mu03-101 Black
  • Armure Mu03-102 Blue
  • Armure Mu03-103 Graphite
  • Armure Mu03-104 White
  • Armure Mu03-105 Brown
  • Armure Mu03-106 Rhodium
  • Armure Mu03-211 Light Blue

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