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Seiko 4J81-5040
The Seiko 4J81-5040 watch movement is an automatic mechanical movement with a sweep seconds hand and calendar function. It operates with a beat rate of 28800 vibrations per hour.
The Seiko 4J81-5040 features the following functions:
- Automatic Winding
- Calendar
- 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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