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This is a genuine MIYOTA minute wheel and pinion for the 5Y30 movement, made in Japan, designed for the 5Y30 3-hand quartz caliber. It serves as the core transmission component of the timekeeping gear train, transmitting power from the center wheel to the hour wheel to drive the minute hand and coordinate with the hour hand for precise time display. This product is brand new and original, not a generic replacement part.
Brand：MIYOTA (by CITIZEN)
Compatible Movement：5Y30 quartz caliber (3-hand, no date)
Part Name：Minute Wheel and Pinion
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Power transmission from center wheel to hour wheel, drives the minute hand
1. Is this minute wheel and pinion an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan.
2. Which movements is this part compatible with?
It fits the MIYOTA 5Y30 quartz caliber (5½ × 6¾ ligne, 2.54mm height). The 5Y30 is a 3-hand, no-date movement with hacking seconds. The 5Y20 is a 2-hand movement—verify your caliber before installation.
3. What happens if the minute wheel and pinion is damaged?
This part is the core transmission component of the timekeeping gear train, positioned between the center wheel and the hour wheel. Damage can cause the minute hand to stop, hour/minute hand desynchronization, or timekeeping errors. Timely replacement is recommended.
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