---
description: Genuine CITIZEN MIYOTA 9100 12H second wheel. Made in Japan. For 9100 series movement 12 o'clock power reserve display drive.
title: MIYOTA/CITIZEN 9100 Second Wheel 12H - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/05/910012H.jpg
---
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- **MIYOTA/CITIZEN 9100 Second Wheel 12H**
[](https://www.soflypart.com/wp-content/uploads/2019/05/910012H.jpg)
# MIYOTA/CITIZEN 9100 Second Wheel 12H
$3.00
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| Brand | Choose an option MIYOTA- 
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| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $3.00 |
| 3 - 4 | 5% | $2.85 |
| 5 - 9 | 7% | $2.79 |
| 10 - 14 | 10% | $2.70 |
| 15+ | 15% | $2.55 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $3.00 |
| 3 - 4 | 5% | $2.85 |
| 5 - 9 | 7% | $2.79 |
| 10 - 14 | 10% | $2.70 |
| 15+ | 15% | $2.55 |
MIYOTA/CITIZEN 9100 Second Wheel 12H quantity
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## Product Description
This is a **genuine MIYOTA 12H second wheel**, **made in Japan**, designed for the **9100 automatic mechanical movement**. It is a transmission component for the **power reserve indicator at 12 o’clock**, driving the hand to display remaining mainspring energy as one of the movement’s **key complications**. This product is **brand new and original**, not a generic replacement part.
## Specifications
- **Brand**：MIYOTA (by CITIZEN)
- **Compatible Movement**：**9100** / **9132** automatic mechanical movements
- **Part Name**：**12H Second Wheel** (power reserve indicator drive)
- **Origin**：**Made in Japan**
- **Quality**：**Genuine original**, brand new
- **Function**：Drives the **power reserve hand at 12 o’clock**
- **Movement Diameter**：**30.2mm** (13½ ligne)
- **Movement Height**：**5.52mm**
- **Frequency**：**28,800 bph** (4Hz)
## FAQ
**1. Is this 12H second wheel an original CITIZEN/MIYOTA genuine part?**
Yes. It is an **original MIYOTA factory part**, **made in Japan**.
**2. What happens if the 12H second wheel is damaged?**
The 12H second wheel drives the **power reserve indicator**. Damage can cause the **power reserve hand at 12 o’clock to stop or misread**, affecting this complication. Power reserve accuracy is critical for **assessing remaining mainspring energy** (approx. 40 hours when fully wound). **Timely replacement** is recommended.
**3. Does this part come with installation tools or instructions?**
**No**. This is a single precision component. Installation requires professional tools; work should be performed by a **qualified watchmaker**.
## Why Choose SOFLY Watch Parts?
**Fast Worldwide Shipping** – Orders are dispatched within 3 business days.
**Competitive Pricing** – Great value across watch movements, replacement parts and watchmaking tools.
**Extensive Selection** – More than 3,000 watch movements, parts and accessories available.
**Trusted Worldwide** – Trusted by watchmakers, repair professionals and watch enthusiasts worldwide.
**Personalized Sourcing** – Can’t find the part you need? Contact **info@soflypart.com** or WhatsApp **+86 18620212114.**
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This product is\u00a0brand new and original, not a generic replacement part. Specifications Brand\uff1aMIYOTA (by CITIZEN) Compatible Movement\uff1a9100\u00a0/\u00a09132\u00a0automatic mechanical movements Part Name\uff1a12H Second Wheel\u00a0(power reserve indicator drive) Origin\uff1aMade in Japan Quality\uff1aGenuine original, brand new Function\uff1aDrives the\u00a0power reserve hand at 12 o'clock Movement Diameter\uff1a30.2mm\u00a0(13\u00bd ligne) Movement Height\uff1a5.52mm Frequency\uff1a28,800 bph\u00a0(4Hz) FAQ 1. Is this 12H second wheel an original CITIZEN/MIYOTA genuine part? Yes. It is an\u00a0original MIYOTA factory part,\u00a0made in Japan. 2. What happens if the 12H second wheel is damaged? The 12H second wheel drives the\u00a0power reserve indicator. Damage can cause the\u00a0power reserve hand at 12 o'clock to stop or misread, affecting this complication. 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