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This is a genuine MIYOTA 9H minute recording wheel for the 0S20 movement, made in Japan, designed for the 0S20 quartz chronograph caliber. It serves as the dedicated drive component for the 60-minute chronograph totalizer at 9 o’clock, transmitting power to the chronograph minute hand as a core transmission component of the chronograph function. This product is brand new and original, not a generic replacement part.
Brand:MIYOTA (by CITIZEN)
Compatible Movement:0S20 quartz chronograph caliber (including 0S2A variants)
Part Name:9H Minute Recording Wheel (60-minute totalizer drive)
Origin:Made in Japan
Quality:Genuine original, brand new
Function:Drives the 60-minute chronograph totalizer at 9 o’clock
1. Is this 9H minute recording wheel 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 MIYOTA 0S20 series chronograph calibers (and 0S2A variants). The movement measures 13½ ligne (30.80mm) with 5.10mm height, featuring the layout: 60-minute totalizer at 9 o’clock, small seconds at 6 o’clock, 24-hour display at 3 o’clock, and date at 4:30.
3. What happens if the 9H minute recording wheel is damaged?
This wheel drives the 60-minute chronograph totalizer at 9 o’clock. Damage can cause the chronograph minute hand to stop or accumulate incorrectly. The 0S20 offers 1/1 second chronograph precision up to 59 minutes 59 seconds. Timely replacement is recommended.
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