Calibre Manufacture Morteau 10

FRENCH MANUFACTURE CALIBER

Caliber designed and developed by YEMA. Components (bridges and mainplate) manufactured directly in our YEMA workshops in Morteau, including assemblies, adjustments and checks.

"GRADE EXCELLENCE"
-3/+5 SECONDS ACCURACY

High mechanical precision and high resistance to magnetic fields and shocks, resulting in chronometric performance.

OPTIMIZED AND UNIQUE ARCHITECTURE

Ingenious mainplate’s symmetrical architecture with high quality regulating organs, shock absorbers, escapements and barrel ensuring great precision and reliability.

LARGE BARREL WITH 70 HOURS POWER RESERVE

Increased power reserve thanks to a large barrel allowing optimized winding while preserving a frequency of 28,800 A/h (4Hz).

FRENCH MANUFACTURE CALIBER

Caliber designed and developed by YEMA. Components (bridges and mainplate) manufactured directly in our YEMA workshops in Morteau, including assemblies, adjustments and checks.

OPTIMIZED AND UNIQUE ARCHITECTURE

Ingenious mainplate’s symmetrical architecture with high quality regulating organs, shock absorbers, escapements and barrel ensuring great precision and reliability.

"GRADE EXCELLENCE"
-3/+5 SECONDS ACCURACY

High mechanical precision and high resistance to magnetic fields and shocks, resulting in chronometric performance.

LARGE BARREL WITH 70 HOURS POWER RESERVE

Increased power reserve thanks to a large barrel allowing optimized winding while preserving a frequency of 28,800 A/h (4Hz).

CMM.10

MOVEMENT

Ø 28mm mechanical self-winding

SELF-WINDING

Bidirectional oscillating weight

FREQUENCY

4Hz (28,800 A/h)

POWER RESERVE

70 Hours

ACCURACY

-3 / +5 seconds

MAGNETIC RESISTANCE

Non-magnetic alloys

SHOCK RESISTANCE

Incabloc® double-cone

REGULATING ORGANS

Glucydur balance wheel

LARGE BARREL

Nivaflex® spring

JEWELS

27

COMPONENTS

208

DECORATION

Galvanic treatment

OWN DESIGN LOCALLY MANUFACTURED

The Calibre Manufacture Morteau 10 (CMM.10) unique’s design offers high performance thanks to its modern architecture and high-quality Franco-Swiss components. Entirely designed and developed by YEMA, the regulating organs are manufactured in Switzerland while the mainplate and bridges are manufactured by YEMA in its Morteau workshops.

MOVEMENT

Ø 28mm mechanical self-winding

SELF-WINDING

Bidirectional oscillating weight

FREQUENCY

4Hz (28,800 A/h)

POWER RESERVE

70 Hours

ACCURACY

-3 / +5 seconds

MAGNETIC RESISTANCE

Non-magnetic alloys

SHOCK RESISTANCE

Incabloc® double-cone

REGULATING ORGANS

Glucydur balance wheel

LARGE BARREL

Nivaflex® spring

JEWELS

27

COMPONENTS

208

DECORATION

Galvanic treatment

OWN DESIGN LOCALLY MANUFACTURED

The Calibre Manufacture Morteau 10 (CMM.10) unique’s design offers high performance thanks to its modern architecture and high-quality Franco-Swiss components. Entirely designed and developed by YEMA, the regulating organs are manufactured in Switzerland while the mainplate and bridges are manufactured by YEMA in its Morteau workshops.

MODERN ARCHITECTURE

The CMM.10 offers a modern take on traditional 3-hands calibers. The construction of the transversal bridge over the balance wheel provides stability, a circular cut-out in the mainplate elegantly frames the balance wheel, permitting views of the regulating organ. The mainplate symmetrical architecture ensures a perfect and elegant vertical alignment of the balance wheel and large barrel.

Moreover, the CMM.10 features a central bridge design that combines the barrel bridge, center wheel bridge and winding stem cock into a large single bridge that forms the central pillar of the movement. This structure reduces the number of bridges and reinforces the main plate by making it possible to contain most of the gear train within the structure, the movement overall enjoys significantly better strength, durability and shock resistance.

BALANCE WHEEL
TRANSVERSAL BRIDGE

The elegant and modern architecture of the balance wheel transversal bridge, with its two fixing points, guarantees high positioning precision. This double bridge helps ensure the stability, shock resistance and precision of the balance wheel whatever the intensity of the activities carried out.

HIGH SHOCK RESISTANCE

The ultra-precise geometry of the Incabloc® double-cone shock absorbers transform uncontrolled shocks of all magnitudes and coming from any direction into movements rigorously directed perpendicular to the balance axis, thus ensuring incomparable robustness to the CMM.10 regulator mechanism.

HIGH SHOCK RESISTANCE

The ultra-precise geometry of the Incabloc® double-cone shock absorbers transform uncontrolled shocks of all magnitudes and coming from any direction into movements rigorously directed perpendicular to the balance axis, thus ensuring incomparable robustness to the CMM.10 regulator mechanism.

GLUCYDUR BALANCE WHEEL
HIGH ACCURACY

The balance wheel is made of Glucydur, a non-magnetic metal alloy with low thermal expansion that provides greater resistance to deformation, corrosion, and magnetic fields. Glucydur is the optimal alloy for the balance wheel which requires stability. The Nivarox® hairspring has high resistance to temperature changes and contributes to the continuous precision of the regulating organ.

70 HOURS OF POWER RESERVE THANKS TO A LARGE BARREL

The CMM.10 caliber has a single large barrel manufactured by Générale Ressorts, optimized to ensure a power reserve of 70 hours while preserving a high frequency of 28,800A/h (4Hz). The Nivaflex® barrel spring alloys combine excellent mechanical properties with excellent corrosion resistance, non-magnetic behavior and a very low coefficient of thermal expansion.

70 HOURS OF POWER RESERVE THANKS TO A LARGE BARREL

The CMM.10 caliber has a single large barrel manufactured by Générale Ressorts, optimized to ensure a power reserve of 70 hours while preserving a high frequency of 28,800A/h (4Hz). The Nivaflex® barrel spring alloys combine excellent mechanical properties with excellent corrosion resistance, non-magnetic behavior and a very low coefficient of thermal expansion.

OPTIMIZED ESCAPEMENT

Interface between the gear train and the regulating organ, the escapement is the place where energy and chronometry intersect in a complex interaction. The escapement is an energy-demanding system, it alone consumes more than half of the barrels’ energy. It is the friction of the anchor pallets on the anchor which, despite their lubrication, dissipates a good part of this energy. The CMM.10 escapement presents notable improvements which reduce this friction thanks to a sophisticated manufacturing process. This advanced escapement ensures optimization of the entire mechanics, precision, and longevity of the caliber components.

SMOOTH AUTOMATIC WINDING MECHANISM

The bidirectional oscillating weight allows the mechanism to be automatically wound using the kinetic energy produced by the wearer's movements. Whatever the direction of rotation of the oscillating weight, it operates by charging the large spring barrel which, once fully wound, offers 70 hours of autonomy. The oscillating weight is mounted on optimized ball bearings that are very resistant to wear and minimize friction, rotate smoothly and silently. Engraved with the words CALIBRE MANUFACTURE MORTEAU 10 and decorated in a “gunmetal” finish in contrast with the galvanized black bridges, the design of the oscillating weight reinforces the innovative and contemporary aesthetic of the caliber.

SMOOTH AUTOMATIC WINDING MECHANISM

The bidirectional oscillating weight allows the mechanism to be automatically wound using the kinetic energy produced by the wearer's movements. Whatever the direction of rotation of the oscillating weight, it operates by charging the large spring barrel which, once fully wound, offers 70 hours of autonomy. The oscillating weight is mounted on optimized ball bearings that are very resistant to wear and minimize friction, rotate smoothly and silently. Engraved with the words CALIBRE MANUFACTURE MORTEAU 10 and decorated in a “gunmetal” finish in contrast with the galvanized black bridges, the design of the oscillating weight reinforces the innovative and contemporary aesthetic of the caliber.

CLEAN CONTEMPORARY AESTHETIC

The CMM.10 was designed as an innovative, new generation, high performance caliber. In order to reinforce the contemporary appearance of the caliber we have opted for a modern and differentiating aesthetic with black galvanic decoration of the bridges and plate. The micro blasting treatment of the mainplate and bridges, applied with a sand blasting machine, results in a neutral, matt surface finish in contrast with the oscillating weight "gunmetal" finish. The uniform black galvanic coating preserves the decorative micro blasting finish of the surface.

TALENTED FRENCH WATCHMAKERS TEAM

Four talented French watchmakers, cumulating over 120 years experience at the most prestigious watch brands, have taken up the challenge of creating YEMA’s first Manufacture Calibers

OLIVIER MORY

WATCHMAKER
DEVELOPER

20+ years experience at Audemars Piguet, Sellita, Piaget, Cartier, Panerai, Skill, YEMA

PATRICK AUGERAU

SENIOR WATCHMAKING
ENGINEER

45+ years experience at Omega, Audemars Piguet, YEMA

JEAN-PAUL BOILLOT

MASTER
WATCHMAKER

40+ years experience at YEMA

NICOLAS BAILLY

TECHNICAL
WATCHMAKER

15+ years experience at Cartier, Pro Horlogerie, YEMA

TALENTED FRENCH
WATCHMAKERS TEAM

Four talented French watchmakers, cumulating over 120 years experience at the most prestigious watch brands, have taken up the challenge of creating YEMA’s first Manufacture Calibers

OLIVIER MORY

WATCHMAKER
DEVELOPER

20+ years experience at Audemars Piguet, Sellita, Piaget, Cartier, Panerai, Skill, YEMA

PATRICK AUGERAU

SENIOR WATCHMAKING ENGINEER

45+ years experience at Omega, Audemars Piguet, YEMA

JEAN-PAUL BOILLOT

MASTER
WATCHMAKER

40+ years experience at YEMA

NICOLAS BAILLY

TECHNICAL
WATCHMAKER

15+ years experience at Cartier, Pro Horlogerie, YEMA

YEMA's IN-HOUSE WATCHMAKING MACHINING CENTER

Our watchmakers team was supported by mechanical and micro-technical engineers from FEMTO Engineering, a renowned Research & Development French institute specialised in watchmaking micro-engineering, in order to industrialize in-house the machining of the CMM.10 caliber components. This has allowed us to set up a new team of engineers and internalize the machining of components following the latest technological manufacturing processes.

YEMA's IN-HOUSE WATCHMAKING MACHINING CENTER

Our watchmakers team was supported by mechanical and micro-technical engineers from FEMTO Engineering, a renowned Research & Development French institute specialised in watchmaking micro-engineering, in order to industrialize in-house the machining of the CMM.10 caliber components. This has allowed us to set up a new team of engineers and internalize the machining of components following the latest technological manufacturing processes.

LOCAL PRODUCTION

Over the past two years, YEMA has made significant investments aimed at insourcing a good part of its production and constantly improving the quality of its manufacturing processes by using new equipment as well as expanding and modernising its workshops and production lines.

In addition, the Franco-Swiss Jura region being increasingly integrated, YEMA now works with new local partners to secure a more responsible and higher quality production.

All CMM.10 caliber components are manufactured in France and Switzerland within a range of 72km from Morteau by recognized craftsman in fine watchmaking. The caliber bridges and mainplates are manufactured in YEMA’s workshops in Morteau where final assembly of all components takes place.

COMPONENTS

MOVEMENT DESIGN

MOVEMENT COMPONENTS

ASSEMBLIES

ORIGIN

FRANCE

FRANCE +
SWITZERLAND

FRANCE

COMPONENTS

ORIGIN

MOVEMENT DESIGN

FRANCE

MOVEMENT COMPONENTS

FRANCE + SWITZERLAND

ASSEMBLIES

FRANCE

A DYNAMIC REGIONAL WATCHMAKING ECOSYSTEM

YEMA workshops are based in Morteau, the cradle of French watchmaking, a few steps from the Swiss watchmaking region. This cross-border watchmaking community concentrated along the Jura mountains has gradually transformed into a true regional ecosystem recognized as Intangible Cultural Heritage by the UNESCO in 2020.

CMM.10