Seiko Cal. 4531 - 638

The Seiko 4531-638 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-056c5ba3dad5]

Also known as: Samurai

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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