Hattori VX9J Movement Day Driving Wheel

Product Description

The Hattori VX9J Movement Day Driving Wheel is a genuine Japanese-made component for the VX9J quartz multifunction movement. This wheel is part of the calendar mechanism, responsible for advancing the day display at approximately 4:30 AM during the 24-hour cycle . It works in conjunction with the date and 24-hour indicators to provide the movement’s full calendar functionality . This genuine Hattori part is essential for watchmakers restoring proper day function when the original component becomes worn or damaged.

Features & Function

• Genuine Hattori part – authentic Japanese-made component for the VX9J multifunction movement

• Calendar mechanism component – drives the day hand at 3 o’clock position

• Precision-engineered – manufactured to Hattori’s original specifications

• Essential for service – commonly replaced when day hand operation becomes irregular

Specifications

• Compatible Movement: Hattori/TMI VX9J

• Movement Size: 12¾ ligne

• Movement Thickness: 3.99 mm 

• Hand Sizes: Hour: 1.10 mm / Minute: 0.65 mm / Seconds: 0.20 mm 

• Subdials: Day at 3 o’clock / Date at 6 o’clock / 24-hour at 9 o’clock 

• Battery: SR927SW (395) 

• Origin: Japan

Applications

• Service and repair – replacing worn or damaged day driving wheels in VX9J movements

• Calendar function restoration – resolving issues with day hand advancement

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine Hattori part?

Yes, this is a genuine Hattori (Seiko/TMI) part made in Japan. The VX9J is a multifunction quartz movement produced by Seiko’s Time Module Inc. (TMI) division .

2. What is the function of the day driving wheel?

The day driving wheel is part of the calendar mechanism that advances the day hand at the 3 o’clock subdial. In the VX9J movement, the day advances during the 24-hour cycle at approximately 4:30 AM .

3. What are the signs that the day driving wheel needs replacement?

Common signs include day hand not advancing correctly, incomplete day changes, or visible wear/damage during inspection. A qualified watchmaker can diagnose these issues.

Why Choose SOFLY Watch Parts?

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