Seiko Cal. 5631 - 980

This Solar model from 1982 features a 41mm Titanium case. With its 22mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-1c4cdef16226]

Also known as: Sumo, Shogun

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1982

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