Seiko Cal. 5631 - 370

This Hand-Winding model from 1987 features a 38mm Stainless Steel case. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-d90da0b310ea]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1987

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