Seiko Cal. 5631 - 870

This Solar model from 1966 features a 42mm Gold-Plated case. With its 20mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-ba99ad8c4728]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1966

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