The ETA 2779 is a reliable automatic mechanical watch movement from the Swiss manufacturer ETA, part of the popular 2770 family produced between 1969 and 1982. Known for its robustness and widespread use in mid-range timepieces, it features day-date complications and a Triovis regulator for precise adjustments. Over 25 million units of this family were made, cementing ETA’s reputation in horology.
Key Specifications
Diameter: 11.5 lignes (25.6 mm), fitting standard case sizes.
Height: 6.0 mm, accommodating day-date wheels.
Jewels: 25 synthetic rubies for reduced friction.
Beat rate: 21,600 vibrations per hour (A/h), offering 48-hour power reserve.
Functions: Sweep seconds, date, day display via dial aperture; quick date-setting and Triovis fine regulator.
Design and Features
This self-winding caliber pairs with the manual-wind ETA 2759 base. It uses an anchor escapement with direct sweep seconds and bidirectional rotor for efficient winding. The Triovis regulator enhances accuracy against temperature changes, while complications support +/-24-hour adjustments.
Historical Context
Introduced in the late 1960s amid the quartz crisis, the 2779 powered brands like Omega, Tissot, and Longines. Production ended in 1982 as ETA shifted focus, but its parts remain available for servicing vintage watches.
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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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