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This is a genuine MIYOTA hour wheel by CITIZEN, made in Japan, designed for the FS10 quartz chronograph movement. By engaging with the minute wheel, it transmits power to the hour hand at a 12:1 reduction ratio for 12-hour time display. This product is brand new and original, not a generic replacement part.
Brand：MIYOTA (by CITIZEN)
Compatible Movement：FS10 quartz chronograph movement (Cal. FS10 / FS11 / FS13 series)
Part Name：Hour Wheel
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Drives the hour hand (with 12:1 reduction ratio from the minute wheel)
Movement Size：10½ ligne (approx. Ø23.3–23.7mm)
Movement Height：4.13mm (FS10 overall height)
1. Is this hour wheel an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan. Purchase through authorized channels to ensure authenticity.
2. Which movements is this hour wheel compatible with?
It fits the FS10 quartz chronograph movement (Cal. FS10 / FS11 / FS13 series). The FS10 is a 3-eye chronograph with date at 3 o’clock, small seconds at 6 o’clock, 60-minute counter at 9 o’clock, and 24H display at 12 o’clock. Verify your movement caliber is FS10.
3. What happens if the hour wheel is worn or damaged?
A damaged hour wheel can cause the hour hand to stop, run incorrectly, or jam. Timely replacement is recommended upon detecting any abnormality.
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