(*) Valjoux
What is "Valjoux" at ETA?
Valjoux is the name of a historic Swiss watch movement manufacturer that is now part of ETA SA, which itself is a subsidiary of the Swatch Group. The name “Valjoux” is especially well known in connection with mechanical chronograph movements, most famously the Valjoux 7750.
Origins of Valjoux
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Full name: Valjoux S.A. (short for Vallée de Joux, a renowned Swiss watchmaking region)
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Founded: Early 20th century
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Specialty: Mechanical chronograph movements
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Merged into ETA: During the 1970s as part of the Swiss watch industry's consolidation
What does Valjoux mean at ETA today?
Today, "Valjoux" refers to a line of chronograph calibers within ETA. Although Valjoux no longer exists as a separate company, the name is still used—especially in reference to the famous ETA Valjoux 7750 movement.
The Most Famous Movement: ETA / Valjoux 7750
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Type: Automatic chronograph
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Introduced: 1973
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Functions: Hours, minutes, small seconds, chronograph (30-minute and 12-hour counters), date (often with day display)
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Key Features: Robust, simple construction, easy servicing
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Technology: Cam-lever chronograph system (not a column wheel), 28,800 vibrations/hour, 25–27 jewels
The 7750 is one of the most widely used automatic chronograph movements in the world, found in both mid-range and luxury watches.
Other Notable Valjoux Movements
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Valjoux 7730, 7733, 7751, 7753, and others
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Some are hand-wound, others include moonphase, full calendar, or other complications
Summary
Valjoux refers to a family of chronograph movements under ETA, with roots in a historic Swiss manufacture. The name stands for reliability, industrial strength, and robust chronograph technology, widely used in tool watches, aviation, and sports chronographs.
