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Seiko 4N20-0018
The Seiko 4N20-0018 watch movement features an adjustable stud holder, automatic winding mechanism, day and date display, sweep seconds hand, and calendar function. It operates at a beat rate of 21,600 vibrations per hour (vph).
The Seiko 4N20-0018 features the following functions:
- Adjustable Stud Holder
- 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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Parts Listing
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