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This is a genuine MIYOTA second wheel set by CITIZEN, including 12H (12 o’clock) and 3H (3 o’clock) second wheels, made in Japan, designed for FS10/FS20 series quartz chronograph movements. These wheels respectively drive the chronograph second hand (at 3H) and the sub second hand (at 12H) as core transmission components of the chronograph function. This product is brand new and original, not a generic replacement part.
Brand：MIYOTA (by CITIZEN)
Compatible Movements：FS10 / FS20 quartz chronograph movements
Part Names：12H second wheel (sub second hand at 12H) and 3H second wheel (chronograph second hand at 3H)
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Drives the sub second hand at 12 o’clock and chronograph second hand at 3 o’clock
Movement Height：5.10mm (FS10/FS20)
1. Is this second wheel set an original CITIZEN/MIYOTA genuine part?
Yes. It is an original MIYOTA factory part, made in Japan.
2. Which movements are these second wheels compatible with?
They are designed for FS10 and FS20 quartz chronograph movements. The FS series features a chronograph function with up to 60-minute measurement. Please verify your movement caliber is FS10 or FS20.
3. Which positions do the two second wheels correspond to?
The 12H second wheel drives the sub second hand at 12 o’clock; the 3H second wheel drives the chronograph second hand at 3 o’clock. Both are essential for chronograph display.
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