---
description: Genuine ETA 7750-8320 movement clutch spring for Valjoux 7750. Swiss-made chronograph engagement component for automatic chronograph repair.
title: ETA 7750 Movement Clutch Spring | ETA Watch Movement Parts - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/06/7750cs.jpg
---
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- **ETA 7750-8320 Movement Clutch Spring**
[](https://www.soflypart.com/wp-content/uploads/2019/06/7750cs.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/06/7750csb.jpg)
# ETA 7750-8320 Movement Clutch Spring
$2.50
You Saved
| Brand | Choose an option ETA- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $2.50 |
| 3 - 4 | 5% | $2.38 |
| 5 - 9 | 7% | $2.33 |
| 10 - 14 | 10% | $2.25 |
| 15+ | 15% | $2.13 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $2.50 |
| 3 - 4 | 5% | $2.38 |
| 5 - 9 | 7% | $2.33 |
| 10 - 14 | 10% | $2.25 |
| 15+ | 15% | $2.13 |
ETA 7750-8320 Movement Clutch Spring quantity
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## Product Description
The **ETA 7750-8320 Movement Clutch Spring** is a genuine Swiss-made component for the ETA/Valjoux 7750 automatic chronograph movement. As a critical part of the chronograph mechanism, this spring provides essential tension to the clutch system that engages and disengages the chronograph function. It is a common service replacement part when chronograph start/stop issues occur .
## Features & Function
- **Genuine ETA part** – authentic Swiss-made component for the ETA 7750 movement
- **Chronograph clutch component** – provides tension to the chronograph engagement system
- **Critical for chronograph operation** – ensures smooth start, stop, and reset functions
- **Direct replacement** – drop-in replacement for worn or damaged clutch springs
- **Precision-engineered** – manufactured to ETA’s original specifications
## Specifications
- **Part Number**: 7750-8320
- **Compatible Movements**: ETA/Valjoux 7750, 7751, 7753, 7754, 7760, 7765
- **Function**: Chronograph clutch spring
- **Caliber Diameter**: 30.0 mm
- **Caliber Height**: 7.9 mm
- **Jewels**: 25
- **Frequency**: 28,800 vph (4 Hz)
- **Power Reserve**: \~42–48 hours
- **Origin**: Switzerland (ETA factory part)
- **Condition**: Brand new
## Applications
- **Service and overhaul** of ETA 7750-series movements
- **Chronograph mechanism repair** – replacing worn or broken clutch springs
- **Chronograph function restoration** – resolving start/stop engagement issues
- Suitable for **professional watchmakers** and **experienced repair technicians**
## FAQs
**1. Is this a genuine ETA part?**
Yes, this is a **genuine ETA factory part** (reference 7750-8320), made in Switzerland. It is not an aftermarket or generic copy .
**2. Which movements is this clutch spring compatible with?**
This clutch spring is compatible with the **ETA/Valjoux 7750** and its variants, including 7751, 7753, 7754, 7760, and 7765.
**3. What is the function of the clutch spring?**
The clutch spring provides tension to the **chronograph clutch mechanism**, ensuring proper engagement and disengagement of the chronograph function during start/stop operations .
## 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 a critical part of the chronograph mechanism, this spring provides essential tension to the clutch system that engages and disengages the chronograph function. It is a common service replacement part when chronograph start/stop issues occur\u00a0. Features & Function Genuine ETA part\u00a0\u2013 authentic Swiss-made component for the ETA 7750 movement Chronograph clutch component\u00a0\u2013 provides tension to the chronograph engagement system Critical for chronograph operation\u00a0\u2013 ensures smooth start, stop, and reset functions\u00a0 Direct replacement\u00a0\u2013 drop-in replacement for worn or damaged clutch springs Precision-engineered\u00a0\u2013 manufactured to ETA's original specifications Specifications Part Number: 7750-8320 Compatible Movements: ETA/Valjoux 7750, 7751, 7753, 7754, 7760, 7765 Function: Chronograph clutch spring Caliber Diameter: 30.0 mm Caliber Height: 7.9 mm Jewels: 25 Frequency: 28,800 vph (4 Hz) Power Reserve: ~42\u201348 hours\u00a0 Origin: Switzerland (ETA factory part)\u00a0 Condition: Brand new Applications Service and overhaul\u00a0of ETA 7750-series movements Chronograph mechanism repair\u00a0\u2013 replacing worn or broken clutch springs Chronograph function restoration\u00a0\u2013 resolving start/stop engagement issues\u00a0 Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced repair technicians FAQs 1. 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Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2019/06/7750cs-150x150.jpg","offers":{"@type":"Offer","description":"Product Description The\u00a0ETA 7750-8320 Movement Clutch Spring\u00a0is a genuine Swiss-made component for the ETA/Valjoux 7750 automatic chronograph movement. As a critical part of the chronograph mechanism, this spring provides essential tension to the clutch system that engages and disengages the chronograph function. It is a common service replacement part when chronograph start/stop issues occur\u00a0. Features & Function Genuine ETA part\u00a0\u2013 authentic Swiss-made component for the ETA 7750 movement Chronograph clutch component\u00a0\u2013 provides tension to the chronograph engagement system Critical for chronograph operation\u00a0\u2013 ensures smooth start, stop, and reset functions\u00a0 Direct replacement\u00a0\u2013 drop-in replacement for worn or damaged clutch springs Precision-engineered\u00a0\u2013 manufactured to ETA's original specifications Specifications Part Number: 7750-8320 Compatible Movements: ETA/Valjoux 7750, 7751, 7753, 7754, 7760, 7765 Function: Chronograph clutch spring Caliber Diameter: 30.0 mm Caliber Height: 7.9 mm Jewels: 25 Frequency: 28,800 vph (4 Hz) Power Reserve: ~42\u201348 hours\u00a0 Origin: Switzerland (ETA factory part)\u00a0 Condition: Brand new Applications Service and overhaul\u00a0of ETA 7750-series movements Chronograph mechanism repair\u00a0\u2013 replacing worn or broken clutch springs Chronograph function restoration\u00a0\u2013 resolving start/stop engagement issues\u00a0 Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced repair technicians FAQs 1. 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