Seiko Cal. 3851 - 643

Seiko 3851-643

This Spring Drive model from 1967 features a 38mm PVD Black case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-c233d0b8d8f6]

Also known as: Tuna, Crown

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
38mm
Case Thickness
14.9mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1967

Related Models

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