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Seiko W621-4A20
The Seiko W621-4A20 watch movement is an automatic movement that lacks a second hand. It features a calendar function and operates at a beat rate of 28800 vibrations per hour. This movement is equipped with 33 jewels to reduce friction and enhance performance.
The Seiko W621-4A20 features the following functions:
- Automatic Winding
- Calendar
- Without Second Hand
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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Documents
Parts Listing
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