Seiko Cal. 5633 - 681

This Spring Drive model from 1979 features a 38mm Gold-Plated case. With its 21mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-dcb589c2cb7a]

Also known as: Navigator, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1979

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