Seiko Cal. 5631 - 533

The Seiko 5631-533 represents an important milestone in Seiko's 1978 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-a1deae4614c2]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1978

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