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Seiko 4N20B
Ligne: 5.5 x 6.75'''
The Seiko 4N20B watch movement incorporates KIF shock protection technology to enhance its durability and resilience against potential external impacts.
The Seiko 4N20B features the following functions:
- KIF Shock Protection
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| SCREW, SET LEVER | Buy part | ||
| SET LEVER | 443/1481 | Buy part | |
| STEM | 401/745 | 401/745 | Buy part |
| THIRD WHEEL | 210/AP 2052 | Buy part |
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