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This is a genuine MIYOTA 3H hour recording wheel for the 0S20 movement, made in Japan and brand new, designed for the 0S20 quartz chronograph caliber. It serves as the dedicated drive component for the 24-hour indicator at 3 o’clock, transmitting power to the 24-hour hand as part of the complete chronograph display. 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：3H Hour Recording Wheel
Origin：Made in Japan
Quality：Genuine original, brand new
Function：Drives the 24-hour hand at 3 o’clock
1. Is this 3H hour 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 (approx. 30.80mm) with 5.10mm height. The 0S20 layout features: 24-hour at 3 o’clock, small seconds at 6 o’clock, and 60-minute totalizer at 9 o’clock.
3. What happens if the 3H hour recording wheel is damaged?
This wheel drives the 24-hour hand at 3 o’clock. Damage can cause the 24-hour hand to stop or misread, affecting the complete time display. The 24-hour hand is linked to the main hour hand and indicates AM/PM. Timely replacement is recommended.
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