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This is a genuine MIYOTA date wheel for the 1M02 movement, made in Japan, designed for the 1M02 day-date quartz caliber. It serves as the core component of the calendar mechanism at 3 o’clock, responsible for automatically advancing the date numeral at midnight and working with the quick dial lever for rapid date correction. This product is brand new and original, not a generic replacement part.
Brand：MIYOTA (by CITIZEN)
Compatible Movement：1M02 quartz caliber (3-hand day-date)
Part Name：Date Wheel
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Drives date display at 3 o’clock, supports quickset
1. Is this date wheel an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan.
2. Which movements is this date wheel compatible with?
It fits the MIYOTA 1M02 day-date quartz caliber (10½ ligne size). This is a 3-hand day-date movement with day/date at 3 o’clock. The 1M02 can replace Citizen 1100A, 1101, 1102, etc. This part differs from the 1M12 (date-only) and 1L12 (smaller size) variants—verify your movement model before installation.
3. What happens if the date wheel is damaged?
The date wheel is the core component of the calendar mechanism. Damage can cause the date to fail to advance, skip, or jam, affecting the calendar function. On the 1M02, crown position 1 is used for date quickset—if the date wheel is damaged, the quickset function may also fail. Timely replacement is recommended.
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