Price range: $78.00 through $102.00
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The Bergeon 2729-ETA series is a professional collection of mainspring winders specifically designed for popular ETA calibers, available in multiple versions to cover a wide range of movements from small ladies‘ calibers to large chronographs.
Each winder is precision-machined from high-quality materials and features a right-hand winding design (red dot) for efficient and accurate mainspring installation.
These genuine Swiss-made tools are essential for watchmakers servicing ETA movements, ensuring correct mainspring handling without risk of distortion or damage .
Designed for ETA Calibers – Covers popular ETA movements including 2824, 2892, 7750, 2671, etc.
Right‑Hand Winding (Red Dot) – Clear direction marking for correct, safe mainspring installation.
Precision Machined – High‑quality steel with accurate internal taper and stop, smooth winding without damage.
Multiple Versions – Different winders for different barrel sizes; available individually or as sets.
Swiss Made – Bergeon professional quality, trusted by watchmakers.
| Parameter | Details |
|---|---|
| Model Series | Bergeon 2729-ETA |
| Type | Mainspring winder |
| Compatible Movements | ETA automatic/manual calibers (e.g., 2824, 2892, 7750, 2671, 2801) |
| Winding Direction | Right‑hand (red dot mark) |
| Material | Precision‑machined steel |
| Origin | Switzerland |
Removing and installing mainsprings in barrels during watch service
Suitable for common ETA calibers 2824, 2892, 7750, 2671, 2801, etc.
Prevents distortion or breakage from manual coiling; improves service efficiency and quality
Professional watch workshops, brand service centers, independent watchmakers
1. Is this a genuine Bergeon tool?
Yes. It is a Swiss Bergeon factory-original 2729-ETA series winder, brand new.
2. Does one winder fit all ETA calibers?
No. Different calibers have different barrel sizes. The 2729-ETA series includes specific versions (e.g., 2729-ETA-2824, 2729-ETA-2892, 2729-ETA-7750). Choose the correct one for your movement.
3. How do I use the red dot mark?
The red dot indicates right‑hand winding direction. Insert the mainspring, turn the handle in the direction of the red dot to wind the spring into the winder, then transfer it directly into the barrel.
4. Are additional accessories required?
A dedicated handle (e.g., Bergeon 2729-MH) is often needed and may be sold separately. Some sets include the handle – confirm with the listing.
5. How do I maintain the winder?
Clean internal debris and oil after use, keep dry. Avoid dropping. Apply a tiny drop of watch oil to the rotating shaft periodically for smooth operation.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
