---
description: Genuine TMI/Seiko VJ12 third wheel for quartz movement. Gear train component restores seconds hand function. Japanese quality.
title: TMI/Hattori SEIKO VJ12 Movement Third Wheel - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/05/VJ12T.jpg
---
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- **TMI/Hattori SEIKO VJ12 Movement Third Wheel**
[](https://www.soflypart.com/wp-content/uploads/2019/05/VJ12T.jpg)
# TMI/Hattori SEIKO VJ12 Movement Third Wheel
$1.00
You Saved
| Brand | Choose an option TMI- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $1.00 |
| 3 - 4 | 5% | $0.95 |
| 5 - 9 | 7% | $0.93 |
| 10 - 14 | 10% | $0.90 |
| 15+ | 15% | $0.85 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $1.00 |
| 3 - 4 | 5% | $0.95 |
| 5 - 9 | 7% | $0.93 |
| 10 - 14 | 10% | $0.90 |
| 15+ | 15% | $0.85 |
TMI/Hattori SEIKO VJ12 Movement Third Wheel quantity
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## Product Description
The **TMI/Seiko VJ12 Movement Third Wheel** is a genuine Japanese-made component for the VJ12 quartz movement . The VJ12 is a compact 8¾ ligne (approx. 19.7mm) movement with a slim 2.71mm height, featuring 3 hands and date function at 6 o’clock . As part of the gear train, the third wheel transmits power from the movement to the **seconds hand**, ensuring accurate time display . This genuine TMI/Seiko part is essential for watchmakers restoring proper timekeeping function when the original component becomes worn or damaged.
## Features & Function
- **Genuine TMI/Seiko part** – authentic Japanese-made component for the VJ12 movement
- **Gear train component** – transmits power to the seconds hand for accurate timekeeping
- **Compact design** – designed for slim 2.71mm quartz movements
- **Essential for service** – commonly replaced when seconds hand operation becomes irregular
## Specifications
- **Compatible Movement**: TMI/Seiko VJ12, VJ12B, VJ12D6
- **Movement Size**: 8¾ ligne (approx. 19.7mm)
- **Movement Height**: 2.71mm
- **Hand Sizes**: Hour: 1.20mm / Minute: 0.70mm / Seconds: 0.17mm
- **Battery**: 364 / SR621SW
- **Date Position**: 6 o’clock
- **Origin**: Japan
## Applications
- **Service and repair** – replacing worn or damaged third wheels in VJ12 movements
- **Gear train restoration** – ensuring smooth power transmission for accurate timekeeping
- Suitable for **professional watchmakers** and **experienced repair technicians**
## FAQs
**1. Is this a genuine TMI/Seiko part?**
Yes, this is a **genuine Seiko (TMI) factory part** made in Japan . The VJ12 is a quartz movement manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .
**2. Which movements is this third wheel compatible with?**
This third wheel is compatible with the **TMI/Seiko VJ12** family of movements, including VJ12B and VJ12D6 variants . The VJ12 is an 8¾ ligne quartz caliber with 3 hands and date at 6 o’clock .
**3. What are the signs that the third wheel needs replacement?**
Common signs include **seconds hand not moving smoothly, stopping, or irregular timekeeping** during movement inspection . A qualified watchmaker can diagnose these issues.
## 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 part of the gear train, the third wheel transmits power from the movement to the\u00a0seconds hand, ensuring accurate time display\u00a0. This genuine TMI/Seiko part is essential for watchmakers restoring proper timekeeping function when the original component becomes worn or damaged. Features & Function Genuine TMI/Seiko part\u00a0\u2013 authentic Japanese-made component for the VJ12 movement Gear train component\u00a0\u2013 transmits power to the seconds hand for accurate timekeeping\u00a0 Compact design\u00a0\u2013 designed for slim 2.71mm quartz movements\u00a0 Essential for service\u00a0\u2013 commonly replaced when seconds hand operation becomes irregular Specifications Compatible Movement: TMI/Seiko VJ12, VJ12B, VJ12D6\u00a0 Movement Size: 8\u00be ligne (approx. 19.7mm)\u00a0 Movement Height: 2.71mm\u00a0 Hand Sizes: Hour: 1.20mm / Minute: 0.70mm / Seconds: 0.17mm\u00a0 Battery: 364 / SR621SW\u00a0 Date Position: 6 o'clock\u00a0 Origin: Japan\u00a0 Applications Service and repair\u00a0\u2013 replacing worn or damaged third wheels in VJ12 movements Gear train restoration\u00a0\u2013 ensuring smooth power transmission for accurate timekeeping Suitable for\u00a0professional watchmakers\u00a0and\u00a0experienced repair technicians FAQs 1. 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