TMI/Hattori SEIKO VD57 Movement Chronograph Second Wheel

Product Description

The TMI/Hattori SEIKO VD57 Movement Chronograph Second Wheel is a genuine Japanese-made component designed for the popular VD57 quartz chronograph movement . This precision gear drives the central chronograph seconds hand, which measures elapsed seconds with a smooth, sweeping motion during timing operations . This genuine TMI/Seiko part is essential for watchmakers restoring proper chronograph function when the original component becomes worn or damaged.

Features & Function

• Genuine TMI/Seiko part – authentic Japanese-made component for the VD57 chronograph movement

• Chronograph module component – drives the central chronograph seconds hand for elapsed time measurement

• Smooth motion design – supports the VD57’s characteristic sweeping chronograph hand motion

• Essential for service – commonly replaced when chronograph seconds hand operation becomes irregular or fails to reset

Specifications

• Compatible Movement: TMI/Seiko VD57, VD57A, VD57B, VD57C

• Movement Size: 12¾ ligne (approx. 29.5mm)

• Movement Height: 4.57mm

• Chronograph Subdial Layout: 60-minute counter (9 o’clock), small seconds (6 o’clock), 1/10 second counter (12 o’clock)

• Battery: SR920SW (371)

• Origin: Japan

Applications

• Service and repair – replacing worn or damaged chronograph second wheels in VD57 movements

• Chronograph function restoration – ensuring smooth and accurate chronograph seconds hand operation and reset

• 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 VD57 is a quartz chronograph movement manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .

2. Which movements is this chronograph second wheel compatible with?

This chronograph second wheel is compatible with the TMI/Seiko VD57, VD57A, VD57B, and VD57C movements. The VD57 series is a 12¾ ligne chronograph movement with a 60-minute counter at 9, small seconds at 6, and 1/10 second counter at 12 o’clock.

3. How does the chronograph second wheel function in the VD57?

The chronograph second wheel drives the central chronograph seconds hand during timing operations. In the VD57 movement, the chronograph hand moves in 1/10 second increments for the first minute, then in 1 second increments for the remainder of the 60-minute timing period .

Why Choose SOFLY Watch Parts?

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