TMI/Hattori SEIKO VJ12 Movement Third Wheel

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 [email protected] or WhatsApp +86 18620212114.