Seiko Cal. 5656 - 218

This Spring Drive model from 1981 features a 41mm Titanium case. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-3e79aa55fab0]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1981

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