Seiko Cal. 5231 - 839

Seiko 5231-839

This Automatic model from 1977 features a 36mm Two-Tone case. With its 18mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-6e98b8e2f0db]

Also known as: Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
36mm
Case Thickness
10.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Silver
Jewels
24j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1977

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