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Seiko 8Y21A
The Seiko 8Y21A mechanical watch movement is equipped with an analog display and sweep seconds functionality. It operates using a quartz mechanism. The movement includes a moon-phase display and a calendar feature.
The Seiko 8Y21A features the following functions:
- Analog Display
- Calendar
- Moon phase Complication
- Quartz Movement
- Sweep Seconds
Balance Staff Listing
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Mainspring Listing
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Incabloc Part Listing
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KIF Part Listing
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