Seiko Cal. 5631 - 635

This Solar model from 1970 features a 42mm Gold-Plated case. With its 21mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-732436eb7e67]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1970

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