Seiko Cal. 5633 - 581

The Seiko 5633-581 represents an important milestone in Seiko's 1976 lineup. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-f4afe43606cf]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1976

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