---
description: Genuine ETA 2824-771 mainspring — Swiss made, fits 2824/2834/2836, brand new. Original factory ETA power source. Genuine ETA.
title: ETA Caliber 2824-771 Mainspring - Sofly
image: https://www.soflypart.com/wp-content/uploads/2020/12/ETA-caliber-2824_2834_2836_2846-711-mainspring.png
---
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- **ETA Caliber 2824-771 Mainspring**
[](https://www.soflypart.com/wp-content/uploads/2020/12/ETA-caliber-2824_2834_2836_2846-711-mainspring.png)
# ETA Caliber 2824-771 Mainspring
$8.00
You Saved
| Brand | Choose an option ETA- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 | — | $8.00 |
| 2 - 4 | 5% | $7.60 |
| 5 - 9 | 7% | $7.44 |
| 10 - 14 | 12% | $7.04 |
| 15+ | 15% | $6.80 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 | — | $8.00 |
| 2 - 4 | 5% | $7.60 |
| 5 - 9 | 7% | $7.44 |
| 10 - 14 | 12% | $7.04 |
| 15+ | 15% | $6.80 |
ETA Caliber 2824-771 Mainspring quantity
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## Product Description
**Genuine ETA 2824-771 mainspring, made in Switzerland and brand new** — the core power-source component for ETA self-winding movements. Designed for **ETA Caliber 2824, 2834, and 2836**, it stores energy from wrist motion or manual winding and **releases it steadily to drive the gear train**. As an original factory part, it is the ideal choice for replacing aged, broken, or weakened springs during service or repair.
## Features & Function
- **Genuine ETA mainspring** — Swiss-made, original ETA spare part (ref. 2824-771), not a generic copy
- **For ETA 2824 / 2834 / 2836** — precision-matched to these popular self-winding calibers
- **Steady energy release** — stores and delivers power evenly to drive the gear train
- **Brand new condition** — clean, ready-to-install original factory component
- **Ideal service replacement** — for aged, broken, or weakened springs
## Specifications
| Parameter | Value |
| --- | --- |
| **Type** | Mainspring |
| **Brand** | ETA (genuine) |
| **Origin** | Made in Switzerland |
| **Part Number** | 2824-771 |
| **Compatibility** | ETA caliber 2824 / 2834 / 2836 |
| **Condition** | Brand new |
| **Application** | Self-winding movement power source |
## Applications
- Replacing aged, broken, or weakened mainsprings in ETA 2824 / 2834 / 2836 movements
- Professional movement servicing and overhaul with genuine ETA parts
- Certified watchmaker and repair technician genuine ETA part supply
- Watch repair workshop and service center equipment
- Restoring reliable power reserve to ETA self-winding watches
## FAQ
**Q1: Is this a genuine ETA mainspring?**
A: Yes — this is a **genuine ETA 2824-771 mainspring**, made in Switzerland. It is an original factory ETA spare part, not a generic or aftermarket copy.
**Q2: Which movement does it fit?**
A: This mainspring is designed for **ETA Caliber 2824, 2834, and 2836** self-winding movements — please confirm your movement reference before ordering.
**Q3: Is it safe to install?**
A: Yes — the mainspring is a **brand new genuine ETA component**. We recommend **professional watchmaker installation** for safe and correct fitting into the barrel.
## Why Choose SOFLY Watch Parts?
- 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 **info@soflypart.com** or WhatsApp **+86 18620212114**.
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As an original factory part, it is the ideal choice for replacing aged, broken, or weakened springs during service or repair. Features & Function Genuine ETA mainspring\u00a0\u2014 Swiss-made, original ETA spare part (ref. 2824-771), not a generic copy For ETA 2824 / 2834 / 2836\u00a0\u2014 precision-matched to these popular self-winding calibers Steady energy release\u00a0\u2014 stores and delivers power evenly to drive the gear train Brand new condition\u00a0\u2014 clean, ready-to-install original factory component Ideal service replacement\u00a0\u2014 for aged, broken, or weakened springs Specifications Parameter Value Type Mainspring Brand ETA (genuine) Origin Made in Switzerland Part Number 2824-771 Compatibility ETA caliber 2824 / 2834 / 2836 Condition Brand new Application Self-winding movement power source Applications Replacing aged, broken, or weakened mainsprings in ETA 2824 / 2834 / 2836 movements Professional movement servicing and overhaul with genuine ETA parts Certified watchmaker and repair technician genuine ETA part supply Watch repair workshop and service center equipment Restoring reliable power reserve to ETA self-winding watches FAQ Q1: Is this a genuine ETA mainspring? 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