The ETA 2834-2 is a renowned automatic mechanical watch movement produced by ETA SA, a Swatch Group subsidiary, serving as the standard reference for the 2834-1 variant. Introduced in the 1970s and refined over decades, it powers countless mid-range watches from brands like Tissot, Hamilton, and Certina due to its reliability and serviceability.
Key Specifications
This workhorse movement features a 25-jewel design with a 28,800 vph beat rate, delivering 38 hours of power reserve. Measuring 25.6mm in diameter and 4.6mm thick, it supports three-hand display with central seconds, date at 3 o’clock, and hacking seconds for precise time-setting. The bidirectional rotor ensures efficient self-winding, while Incabloc shock protection enhances durability.
Technical Highlights
Accuracy: COSC-certified variants achieve -4/+6 seconds per day; standard models hold ±12 seconds.
Functions: Date quickset, interchangeable beat adjustment for easy regulation.
Variants: 2834-1 (base), 2834-2 (hacking), with upgrades like Nivachron hairspring in modern Powermatic 80 iterations extending reserve to 80 hours.
Historical Context
Evolving from Valjoux roots post-ETA merger, the 2834 family dominated the 1980s-2000s as Swiss watches shifted to quartz. Today, amid Swatch’s in-house push, it’s phased out but remains abundant in aftermarket parts for vintage repairs. Its modular design facilitates servicing, ideal for enthusiasts restoring classics.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
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