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This is a genuine MIYOTA winding pinion for the 6S10 movement, made in Japan, designed for the 6S10 quartz chronograph caliber. It serves as the core drive component of the keyless works and chronograph winding system, transmitting crown rotation power to the setting mechanism and chronograph system for time setting and date quickset. This product is brand new and original, not a generic replacement part.
Brand：MIYOTA (by CITIZEN)
Compatible Movement：6S10 quartz chronograph caliber (compatible with 6S20, 6S30 series)
Part Name：Winding Pinion
Related Part：Winding stem 065-A13 (Tap 10, 17.6mm length)
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Transmits winding and setting power, connecting crown to movement gear train。。。。。。。。。。。。。。。。。。。。
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?
It fits MIYOTA 6S10, 6S20, and 6S30 series quartz chronograph calibers . The 6S10 measures 15 ligne (Φ34.60mm) with 4.90mm height and offers accuracy of ±20 seconds/month . Verify your movement main plate marking before installation.
3. What happens if the winding pinion is damaged?
The winding pinion is the core drive component of the keyless works and chronograph system. Damage can cause time setting failure or abnormal date quickset, affecting watch functionality. Timely replacement is recommended.
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