Seiko Cal. 6231 - 107

Seiko 6231-107

This Spring Drive model from 1979 features a 37mm Two-Tone case. With its 19mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-a0e12a1735d3]

Also known as: Bullhead, Navigator

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
37mm
Case Thickness
14.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
28,800 bph
Power Reserve
62 hours
Year
1979

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