Seiko Cal. 5631 - 839

This Solar model from 1969 features a 38mm Stainless Steel case. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-8803e00fd3e0]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1969

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