Seiko Cal. 5639 - 693

The Seiko 5639-693 represents an important milestone in Seiko's 1979 lineup. With its 21mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-4a047bca3fd1]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1979

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