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The TMI/Seiko VX3JA Movement 6H Wheel is a genuine Japanese-made component for the VX3JA multifunction quartz movement. This wheel is part of the calendar mechanism, responsible for driving the date hand located at the 6 o’clock subdial. This genuine TMI/Seiko part is essential for watchmakers restoring proper date function when the original component becomes worn or damaged.
Genuine TMI/Seiko part – authentic Japanese-made component for the VX3JA movement
Calendar mechanism component – drives the date hand at the 6 o’clock subdial
Multifunction compatibility – part of the VX3JA’s three-eye layout with day, date, and 24-hour subdials
Essential for service – commonly replaced when date function becomes irregular
Compatible Movement: TMI/Seiko VX3JA
Movement Size: 10½ ligne (approx. 23.3mm)
Subdial Layout: Day at 9 o’clock / Date at 6 o’clock / 24-hour at 3 o’clock (VX3JA)
Origin: Japan
Service and repair – replacing worn or damaged date wheels in VX3JA movements
Calendar function restoration – resolving issues with date hand advancement
Suitable for professional watchmakers and experienced repair technicians
1. Is this a genuine TMI/Seiko part?
Yes, this is a genuine TMI (Seiko) part made in Japan. The VX3JA is a multifunction quartz movement produced by Seiko’s Time Module Inc. (TMI) division.
2. How does the date setting work in the VX3JA movement?
To set the date, pull the crown out to position 2 and turn it counter-clockwise to advance the date hand.
3. What are the signs that the date wheel needs replacement?
Common signs include date hand not advancing correctly when setting, incomplete date changes, or visible wear/damage during inspection. A qualified watchmaker can diagnose these issues.
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