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Seiko 4206B
Ligne: 12.5'''
Jewels: 17
Power Reserve: 36 hrs
Frequency: 18000 vph
Type: Automatic
Period used: 1948-1955
Diameter: 28.2 mm
Height: 5.6 mm
Hands: 1.32 x 0.80 x 0.20 mm
The Seiko 4206B watch movement is an automatic (bumper) movement with a sweep second function. It was used during the period of 1948-1955. The specific differences between the 138SS and 139 are not known.
The Seiko 4206B features the following functions:
- Automatic (bumper)
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.090 x 250 x 8.0 mm | Auto | Buy mainspring |
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) |
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Documents
Parts Listing
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