The ETA 2879 is a reliable automatic mechanical watch movement produced by ETA SA, introduced around 1968 as part of the interchangeable “Gabarit” family alongside FHF calibers. Known for its sturdy construction and low profile of 5.50 mm, it measures 25.60 mm in diameter (11.5 lignes) and beats at 21,600 vibrations per hour. This movement powered various mid-range watches in the 1970s, featuring day-date complications with bilingual day wheels and instant change mechanisms.
Key Specifications
Jewels: 17, 21, or 25 depending on variant, with Diafix settings for the escape wheel and third wheel enhancing precision.
Functions: Automatic bi-directional winding via central rotor, sweep seconds, quickset date at 3:00, day window at 3:00, and hacking seconds.
Technical Features: Indirectly driven minute hand, large balance at 12:00, barrel at 7:30, Incabloc shock protection, adjustable stud holder, and counter-clockwise balance cock.
Power Reserve: Approximately 42-50 hours, hand-windable option available.
Design and Production
The ETA 2879 integrated its winding gear directly, unlike add-on automatics, creating a robust, low-profile unit ideal for dress watches. Part of the short-lived 1970s ETA 2850 series (time-only: 2851/2850; date: 2853/2852; day-date: 2859/2858/2879/2878), production ended after a few years due to market shifts. Variants like ETA 2878 offered manual winding at the same frequency.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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