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This is a genuine MIYOTA 9H wheel (24-hour display wheel at 9 o’clock), made in Japan, designed for the 8217 automatic mechanical movement. It serves as the dedicated drive component for the 24-hour subdial at 9 o’clock, transmitting power to the 24-hour hand for second time zone or AM/PM indication. This product is brand new and original, not a generic replacement part.
Brand：MIYOTA (by CITIZEN)
Compatible Movement：8217 automatic mechanical movement (based on 8215/821A framework)
Part Name：9H Wheel (24-hour wheel)
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Drives the 24-hour hand at 9 o’clock
Movement Diameter：26mm (11½ ligne)
Movement Height：5.67mm
Frequency：21,600 bph (3Hz)
Power Reserve：Approx. 42 hours
Jewels：21
Accuracy：-20 ~ +40 sec/day
1. Is this 9H wheel an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan.
2. What happens if the 9H wheel is damaged?
The 9H wheel drives the 24-hour display at 9 o’clock. Damage can cause the 24-hour hand to stop or misread. As this complication is linked to the main hour hand, damage may indicate gear train issues. Timely replacement is recommended.
3. Does this part come with installation tools or instructions?
No. This is a single precision component. Installation involves calendar/24H wheel disassembly and should be performed by a qualified watchmaker.
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