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This is a genuine MIYOTA winding pinion by CITIZEN, made in Japan, designed for the FS00 quartz chronograph movement. It is a core component of the keyless works and winding system, transmitting rotational power from the crown to the setting mechanism or chronograph function for time setting and manual winding. This product is brand new and original, not a generic replacement part.
Brand:MIYOTA (by CITIZEN)
Compatible Movement:FS00 quartz chronograph movement (FS00/FS03 series)
Part Name:Winding Pinion / Clutch Wheel
Origin:Made in Japan
Quality:Genuine original, brand new
Function:Transmits winding and setting power, connecting crown to movement gear train
Movement Size:10½ ligne (Ø23.7mm)
Movement Height:4.13mm
1. Is this winding pinion an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan.
2. Which movements is this winding pinion compatible with?
This winding pinion is specifically designed for the MIYOTA FS00 quartz chronograph movement. The FS00 features a 3‑eye chronograph with 60‑minute totalizer at 10 o’clock, small seconds at 6 o’clock, 24‑hour display at 2 o’clock, and date at 4 or 6 o’clock. Verify your movement caliber is FS00.
3. What happens if the winding pinion is worn or damaged?
A damaged winding pinion can cause inability to set time, winding failure, or chronograph operation issues. This part is a key transmission component of the keyless works. Timely replacement is recommended upon detecting any abnormality.
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