---
description: Genuine MIYOTA 5R21/5R32 coil block (246-137), made in Japan. Core stepper drive for 3¾×6 ligne ultra-small movements, fits 337 battery.
title: MIYOTA/CITIZEN 5R21 Circuit Block Electronic Module - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/05/5R21C.jpg
---
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- **MIYOTA/CITIZEN 5R21 Circuit Block Electronic Module**
[](https://www.soflypart.com/wp-content/uploads/2019/05/5R21C.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/05/5R21CB.jpg)
# MIYOTA/CITIZEN 5R21 Circuit Block Electronic Module
$6.00
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### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 4 | — | $6.00 |
| 5 - 9 | 5% | $5.70 |
| 10+ | 10% | $5.40 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 4 | — | $6.00 |
| 5 - 9 | 5% | $5.70 |
| 10+ | 10% | $5.40 |
MIYOTA/CITIZEN 5R21 Circuit Block Electronic Module quantity
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## Product Description
This is a **genuine MIYOTA coil block (Part No. 246-137)** for **5R21 and 5R32 movements**, **made in Japan**, designed for **ultra-small quartz calibers**. It serves as the **core drive component** of the stepper motor, converting electrical pulses from the circuit board into magnetic force to drive the gear train. The 5R21 is a **two-hand movement** while the 5R32 is a **three-hand movement**—both are ultra-small calibers specifically designed for **ladies’ watches**. This product is **brand new and original**, intended for repairing movements that fail due to open circuits, short circuits, or corrosion damage to the coil.
## Specifications
- **Part Number**：**246-137**
- **Compatible Movements**：**5R21 / 5R32** ultra-small quartz calibers
- **Origin**：**Made in Japan**
- **Quality**：**Genuine original**, brand new
- **Function**：**Converts electrical pulses to magnetic force** for stepper motor
## FAQ
**1. Is this coil block an original MIYOTA genuine part?**
**Yes**. It is an **original MIYOTA factory part** (Part No. **246-137**), **made in Japan**, manufactured by Citizen’s MIYOTA division.
**2. Is the coil block compatible with both 5R21 and 5R32?**
**Yes**. According to the part number and parts listing, this coil block (246-137) fits both **5R21 (two-hand) and 5R32 (three-hand)** movements. The coil module is common to both, though movement height and hand configurations differ.
**3. What are the main differences between the two movements?**
**5R21 is a two-hand movement** (hour/minute) with approximately **4 years** battery life and **1.90mm** height; **5R32 is a three-hand movement** (hour/minute/second) with approximately **2 years** battery life and **2.00mm** height. Both are ultra-small calibers designed for **ladies’ watches** and measure **3¾×6 ligne**.
## 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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It serves as the\u00a0core drive component\u00a0of the stepper motor, converting electrical pulses from the circuit board into magnetic force to drive the gear train. The 5R21 is a\u00a0two-hand movement\u00a0while the 5R32 is a\u00a0three-hand movement\u2014both are ultra-small calibers specifically designed for\u00a0ladies' watches. This product is\u00a0brand new and original, intended for repairing movements that fail due to open circuits, short circuits, or corrosion damage to the coil. Specifications Part Number\uff1a246-137 Compatible Movements\uff1a5R21 / 5R32\u00a0ultra-small quartz calibers Origin\uff1aMade in Japan Quality\uff1aGenuine original, brand new Function\uff1aConverts electrical pulses to magnetic force\u00a0for stepper motor FAQ 1. Is this coil block an original MIYOTA genuine part? Yes. It is an\u00a0original MIYOTA factory part\u00a0(Part No.\u00a0246-137),\u00a0made in Japan, manufactured by Citizen's MIYOTA division. 2. 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Extensive Selection\u00a0\u2013 More than 3,000 watch movements, parts and accessories available. Trusted Worldwide\u00a0\u2013 Trusted by watchmakers, repair professionals and watch enthusiasts worldwide. Personalized Sourcing\u00a0\u2013 Can\u2019t find the part you need? Contact\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2019/05/5R21C-150x150.jpg","offers":{"@type":"Offer","description":"Product Description This is a\u00a0genuine MIYOTA coil block (Part No. 246-137)\u00a0for\u00a05R21 and 5R32 movements,\u00a0made in Japan, designed for\u00a0ultra-small quartz calibers. It serves as the\u00a0core drive component\u00a0of the stepper motor, converting electrical pulses from the circuit board into magnetic force to drive the gear train. The 5R21 is a\u00a0two-hand movement\u00a0while the 5R32 is a\u00a0three-hand movement\u2014both are ultra-small calibers specifically designed for\u00a0ladies' watches. 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