The ETA 2834-2 is a reliable automatic mechanical watch movement produced by ETA SA Manufacture Horlogère Suisse, renowned for powering mid-range timepieces from brands like Tissot, Hamilton, and Mido.
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Key Specifications

This self-winding caliber measures 11.5 lignes (about 25.6mm in diameter) with a height of 5.05mm and features 25 jewels. It beats at 28,800 vibrations per hour (4Hz), delivering central hours, minutes, seconds, and a date function at 3 o’clock. Power reserve lasts 38-42 hours when fully wound, supported by a bidirectional rotor with ball bearing.
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Grades and Accuracy

Available in grades like Standard, Elabore, and Top (with Glucydur balance and Incabloc shock protection), accuracy varies from ±12-30 seconds/day (Standard) to ±4-15 seconds/day (Top, 5-position adjusted). It includes hacking seconds and manual winding for precision setting.

​History and Applications

Evolved from the ETA 2824 family in the 1970s, the 2834-2 adds enhanced date reliability and shock resistance via Novodiac/Incabloc systems. Widely used in dive watches and dress models for its robustness and serviceability, it remains a benchmark despite ETA’s shift toward in-house calibers.

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Stem, Crown, Hands & Spares might be available for this movement.

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