IN-HOUSE CALIBER
MBP1000

In 2011, after 2 years of Research & Development and over € 3 million investment, YEMA releases its in-house self-winding mechanical movement, the Caliber MBP1000. Our in-house movement has been designed, manually assembled and precisely taken care of at our Morteau (France) workshops by highly experienced French traditional watchmakers.

Known for its excellent craftsmanship, the French art of watchmaking has a longstanding tradition of excellence. It goes back more than six hundred years but it is in the 18th century that it takes off in Franche-Comté, the French region in the Jura mountains just a few miles away from Switzerland.

Watchmaking was first and foremost a meticulous craft practiced in winter as a supplementary activity by farmers living in the Jura mountains. Today the watchmaking craftsmanship is preserved by historical Franche-Comté brands like YEMA and the recurrent exchanges between skilled watch experts across the border.

YEMA's workshops are based in the small town of Morteau (Franche-Comté), surrounded by extensive pine forests in a secluded valley in the Jura mountains. YEMA is run by a third generation watchmakers‘ family of Morteau with a small scale team averaging +30 years of service. Today, YEMA and other local watchmakers are the worthy heirs of a long watchmaking tradition that goes back centuries. 

All these historical and geographical elements have enabled the French Watchmaker YEMA to design its own In-house mechanical movement.

Jean-Paul Boillot

Master Watchmaker

With almost 40 years of service, Jean-Paul Boillot is YEMA's Watchmaking Master. Born into a watchmaking family for four generations, Jean-Paul has been immersed in the world of watchmaking since his earliest childhood. His parents owned a small watchmaking business in the family home, which allowed him to observe and practice the work and meticulous gestures that mechanical movement require.

“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 honoured to work on the MBP1000 Caliber development by leading its design, prototyping and assembling.”


Jean-Paul Boillot 

DIMENSIONS :

Automatic Caliber 12 lines

Thickness : 4,60 mm

AUTONOMY :

45 hours Power Reserve

Rotor Frequency :
28 800 A/h (4 Hertz)

COMPLICATIONs :

Hours, minutes, seconds
Date (at 3 o'clock) variant

3 Positions Adjustment
Date quickset function
Stop-seconds function

TECHNICAL SPECS :

Conventional barrel spring with sliding flange at the top of the winding

Automatic bi-directional winding via oscillating rotor

Disengaging of automatic winding device during manual winding

Center pivot swivel with ball bearing adjustment

3 arms rotor, optimal inertia

Quick release dial screw

31 jewels

VARIANTS :

The mechanical movement has two other variants:

MBP1010 CALIBER 

Two hands, small seconds hand, date at 6 o'clock

28 800 A/h, 31 jewels anti-friction and anti-wear

Two-way self-winding and stop-second providing a 45-hour power reserve

Quick date adjustment

11 1/2 lines

MBP1030 CALIBER 

Two hands, small seconds hand, power reserve indicator, date at 3 o'clock

28 800 A/h, 31 jewels anti-friction and anti-wear

Two-way self-winding and stop-second providing a 45-hour power reserve

Quick date adjustment

11 1/2 lines

Yema France

YEMA's In-house Caliber MBP1000 performance has been throughly analysed, tested and reviewed by CETEHOR, the French Watch Technical Laboratory.

CETEHOR : Founded in 1945, the French Watch Technical Laboratory is a French national organism located in Besançon and whose primary mission is the technical control of calibers manufactured in France. CETEHOR is the main reference for French watchmakers.

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