Seiko Cal. 5637 - 677

This Spring Drive model from 1981 features a 34mm Titanium case. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ffe0ea9ba852]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

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