TMI/Hattori SEIKO VK63 Movement 24 Hour Wheel 3H

Product Description

The TMI/Hattori SEIKO VK63 Movement 24 Hour Wheel (3H) is a genuine Japanese-made component for the VK63 meca-quartz chronograph movement. This wheel drives the permanent 24-hour subdial hand at the 3 o’clock position, operating with a 12:1 reduction ratio linked to the hour wheel to indicate AM/PM. This genuine TMI/Hattori part is essential for watchmakers restoring proper 24-hour indicator function when the original component becomes worn or damaged.

Features & Function

• Genuine Seiko/TMI part – authentic Japanese-made component for the VK63 movement

• 24-hour indicator drive – drives the 3 o’clock AM/PM subdial hand with 12:1 reduction ratio

• Linked to hour wheel – operates in conjunction with the hour wheel for accurate 24-hour display

• Essential for service – replacement is the direct solution when the subdial hand stops, jumps, or becomes misaligned

Specifications

• Compatible Movement: Hattori/TMI VK63, VK63A

• Movement Size: 13½ ligne (approx. 30mm)

• Movement Height: 5.10mm

• Subdial Position: 24-hour indicator at 3 o’clock

• Reduction Ratio: 12:1 (linked to hour wheel)

• Hand Sizes: Hour: 1.50mm / Minute: 0.90mm / Chrono Seconds: 0.38mm / Sub Hands: 0.37mm

• Date Position: 4:30 (tilted)

• Battery: 394 / SR936SW

• Origin: Japan

Applications

• Service and repair – replacing worn or damaged 24-hour wheels in VK63 movements

• Subdial function restoration – resolving issues with the 24-hour hand stopping, jumping, or misaligning

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine Seiko/TMI part?

Yes, this is a genuine Seiko (TMI) factory part made in Japan. The VK63 is a meca-quartz chronograph movement manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI).

2. How does the 24-hour wheel function in the movement?

The 24-hour wheel drives the 3 o’clock subdial hand with a 12:1 reduction ratio linked to the hour wheel, completing one full rotation every 24 hours to indicate AM/PM.

3. What are the signs that the 24-hour wheel needs replacement?

Common signs include the 24-hour hand stopping, jumping, not moving in sync with the hour hand, or showing physical damage during 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.