ETA 2779 – interchangeable spare parts

ETA 2779 movement

Which spare parts fit the ETA 2779 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

3Parts with interchange data
24Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of ETA and the original spare-part labels. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.

🔧 Interchangeable parts

Source: original interchangeability lists of ETA (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for ETA 2779 (height × diameter × thickness × length) and matching mainspring in our shop:

📄 Technical document

View the original document for ETA 2779 online:

🔗 Movements sharing the most parts

→ All calibers of ETA

❓ Frequently asked questions

Which ETA 2779 spare parts also fit other movements?

For the ETA 2779, 3 part numbers are listed as interchangeable. Together they fit 24 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the ETA 2779?

The most shared parts: ETA 2770 (3 parts), ETA 2772 (3 parts), ETA 2773 (3 parts).

Which mainspring fits the ETA 2779?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.45 × 11.0 × 0.125 × 400 mm (GR 4006-X, automatic, with welded slipping bridle).

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