---
description: Genuine Seagull ST1903 manual-winding chronograph movement — column wheel, 21 jewels, 21600 vph, ~42h reserve. Made in China.
title: Seagull ST1903 Manual Winding Movement - Sofly
image: https://www.soflypart.com/wp-content/uploads/2020/12/DSC05803.jpg
---
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- **Seagull ST1903 Manual Winding Movement**
[](https://www.soflypart.com/wp-content/uploads/2020/12/DSC05803.jpg)
[](https://www.soflypart.com/wp-content/uploads/2020/12/DSC05804.jpg)
# Seagull ST1903 Manual Winding Movement
$125.00
You Saved
| Brand | Choose an option China Movement- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $125.00 |
| 3 - 4 | 5% | $118.75 |
| 5 - 9 | 7% | $116.25 |
| 10+ | 10% | $112.50 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $125.00 |
| 3 - 4 | 5% | $118.75 |
| 5 - 9 | 7% | $116.25 |
| 10+ | 10% | $112.50 |
Seagull ST1903 Manual Winding Movement quantity
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## Product Description
**Genuine Seagull ST1903 manual-winding mechanical chronograph movement**, manufactured by Tianjin Seagull (China) and brand new. A classic **column-wheel chronograph caliber** with integrated small-seconds and 30-minute counter — delivering vintage-inspired mechanical charm with reliable, hand-wound performance. An ideal movement for watchmakers building or servicing mechanical chronograph timepieces.
## Features & Function
- **Genuine Seagull movement** — brand new, made by Tianjin Seagull (China), not a generic copy
- **Manual winding chronograph** — hand-wound column-wheel caliber for mechanical charm
- **Integrated counters** — small-seconds and 30-minute chronograph totalizer
- **Reliable hand-wound performance** — consistent timekeeping and stable chronograph operation
- **Ideal for chronograph builds** — for watchmakers and repair technicians
## Specifications
| Parameter | Value |
| --- | --- |
| **Brand** | Seagull |
| **Model** | ST1903 |
| **Origin** | Made in China (Tianjin Seagull) |
| **Type** | Manual-winding mechanical chronograph |
| **Jewels** | 21 jewels |
| **Frequency** | 21,600 vph (3 Hz) |
| **Power Reserve** | \~42 hours |
| **Condition** | Brand new |
## Applications
- Building mechanical chronograph wristwatches with vintage column-wheel appeal
- Servicing and overhauling Seagull ST1903 chronograph movements
- Watchmaker and repair technician movement supply
- Restoring classic-style mechanical chronograph timepieces
- Replacement movement for compatible chronograph cases
## FAQ
**Q1: Is this a genuine Seagull movement?**
A: Yes — this is a **genuine Seagull ST1903 movement**, brand new and manufactured by Tianjin Seagull in China. It is an original Seagull caliber, not a generic copy.
**Q2: Is it automatic or manual winding?**
A: The ST1903 is a **manual-winding mechanical chronograph** — it must be wound by hand; it does not self-wind from wrist motion.
**Q3: What type of chronograph is it?**
A: It is a **column-wheel chronograph** — prized for smoother, more precise start/stop engagement and vintage mechanical character.
## 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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A classic\u00a0column-wheel chronograph caliber\u00a0with integrated small-seconds and 30-minute counter \u2014 delivering vintage-inspired mechanical charm with reliable, hand-wound performance. An ideal movement for watchmakers building or servicing mechanical chronograph timepieces. Features & Function Genuine Seagull movement\u00a0\u2014 brand new, made by Tianjin Seagull (China), not a generic copy Manual winding chronograph\u00a0\u2014 hand-wound column-wheel caliber for mechanical charm Integrated counters\u00a0\u2014 small-seconds and 30-minute chronograph totalizer Reliable hand-wound performance\u00a0\u2014 consistent timekeeping and stable chronograph operation Ideal for chronograph builds\u00a0\u2014 for watchmakers and repair technicians Specifications Parameter Value Brand Seagull Model ST1903 Origin Made in China (Tianjin Seagull) Type Manual-winding mechanical chronograph Jewels 21 jewels Frequency 21,600 vph (3 Hz) Power Reserve ~42 hours Condition Brand new Applications Building mechanical chronograph wristwatches with vintage column-wheel appeal Servicing and overhauling Seagull ST1903 chronograph movements Watchmaker and repair technician movement supply Restoring classic-style mechanical chronograph timepieces Replacement movement for compatible chronograph cases FAQ Q1: Is this a genuine Seagull movement? 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