Seiko Cal. 5231 - 599

Seiko 5231-599

This Automatic model from 1975 features a 39mm Titanium case. With its 21mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-d01d9145d4be]

Also known as: Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
39mm
Case Thickness
9.0mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
30m
Dial Color
Green
Jewels
33j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1975

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