YEMA

IN-HOUSE CALIBERS

SECOND-GENERATION IN-HOUSE CALIBERS

YEMA's In-house Calibers YEMA2000 and YEMA3000 are an evolution of our first caliber MBP1000 released in 2011. Several components have been improved in order to achieve fundamental gains in terms of precision and durability. Designed, developed and assembled by our watchmakers in our Morteau (France) workshops, our Standard Grade In-house Calibers combine manufacturing simplicity and efficiency offering great precision and reliability at a competitive price point.

IMPROVED PRECISION

HAIRSPRING REGULATOR

The regulator mechanism has been modified in order to better adjust the hairspring and balance wheel in all positions. The new mechanism is far more reliable, which results in more accurate regulations while avoiding accidental unregulation due to shocks when the watch is worn in the most extreme conditions.

REVERSING WHEELS

In order to counter-effect an excessive rotational effect in one and the same direction of the oscillating weight, the reversing wheels have been modified for an improved winding of the mechanism in both directions.

OSCILATING WEIGHT FINISHING

The oscillating weight has been decorated with the mentions, YEMA 1948, Maison Horlogère Française, Caliber YEMA2000.

ADVANCED COMPLICATIONS

CALENDAR DRIVING WHEEL

These components allow the date to jump every 24 hours. The new version facilitate a smoother and more precise jump.

DATE COMPLICATION

Our new calibers have the advantage of being able to be assembled without their date complication to avoid the "ghost-date effect" on no-date dial models without a date function. The disc wheels typography and colors have also been improved.

GMT COMPLICATION

Complication allowing the display of a second time zone via an independent hand.

CHRONOMETRIC TESTS

Our second-generation In-house Calibers have undergone numerous control tests including a final one carried out by the Centre Technique Horloger Français, a French independent institution founded in 1945 responsible of testing watch calibers made in France.

Precision has been improved to +/-10 s/d accuracy and +/-25 s/d tolerance.

Chronometric Tests (fr)

YEMA'S IN-HOUSE CALIBERS FAQ'S

Detailed specifications, performance and maintenance

YEMA'S IN-HOUSE CALIBERS FAQ'S

Detailed specifications, performance and maintenance

CALIBER FAQ's
“In my childhood, the Morteau valley was the cradle of French watchmaking. Each small village was crowded with family businesses dedicated to horology and watchmaking. YEMA was one of the most renowned local watch brands and the leading French watch exporter at that time. I always had in mind the idea of designing a quality French movement at an affordable price as we used to do in the past. So I was very honored to work on the development of YEMA's in-house Calibers by leading its design, prototyping and assembling.”

Jean-Paul Boillot