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The TMI/Seiko VD53/57 Movement Chronograph Second Wheel is a genuine Japanese-made component for the popular VD53 and VD57 quartz chronograph movements from Seiko’s Time Module Inc. (TMI) division . As part of the chronograph module, this wheel drives the chronograph seconds hand, typically the central seconds hand that measures elapsed time during chronograph operation . This genuine TMI/Seiko part is essential for watchmakers restoring proper chronograph function when the original component becomes worn or damaged.
Genuine TMI/Seiko part – authentic Japanese-made component for VD53 and VD57 chronograph movements
Chronograph module component – drives the chronograph seconds hand for elapsed time measurement
Precision-engineered – works with the 3-step motor system of the VD5 series movements
Essential for service – commonly replaced when chronograph seconds hand operation becomes irregular or fails to reset
Compatible Movements: TMI/Seiko VD53, VD57 (including A/B/C variants)
Movement Size: 12 ¾ ligne (approx. 29.5mm)
Movement Height: 4.57mm
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
Service and repair – replacing worn or damaged chronograph second wheels in VD53/VD57 movements
Chronograph function restoration – ensuring smooth and accurate chronograph seconds hand operation and reset
Suitable for professional watchmakers and experienced repair technicians
1. Is this a genuine TMI/Seiko part?
Yes, this is a genuine Seiko (TMI) factory part made in Japan. The VD53 and VD57 are quartz chronograph movements manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .
2. What is the function of the chronograph second wheel?
The chronograph second wheel is part of the chronograph module that drives the chronograph seconds hand for elapsed time measurement. In the VD53/VD57 movements, this hand moves in 1/10 second increments during the first minute and then in 1 second increments for the remainder of the 60-minute timing period .
3. What are the signs that the chronograph second wheel needs replacement?
Common signs include chronograph seconds hand not moving, sticking, failing to reset to zero, or visible wear/damage during inspection. A qualified watchmaker can diagnose these issues.
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