Seiko Cal. 4431 - 579

Seiko 4431-579

This Automatic model from 1981 features a 44mm Two-Tone case. With its 20mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-abb352813d14]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
44mm
Case Thickness
12.8mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
160m
Dial Color
Navy
Jewels
28j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1981

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seikata-wm-abb352813d14