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.
🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 401 | Winding stem | |
| 415 | Ratchet wheel | |
| 420 | Crown wheel |
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
❓ 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).
🛠️ For the workshop
Replacement Sapphire Watch Crystal, Flat, 1.0 mm, Ø 15 - 45 mm22,40 € – 34,90 € incl. VAT *View item ›
HIGH DOMED ACRYLIC GLASS Replacement Watch Glass for Wristwatches and Pocket Watches H: 5.25mm6,99 € – 9,99 € incl. VAT *View item ›
Clock Winding Key – 21 Sizes4,65 € – 8,95 € incl. VAT *View item ›