Seiko Cal. 5631 - 406

This Spring Drive model from 1989 features a 38mm Gold-Plated case. With its 20mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-a9cc84930b4c]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1989

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