Seiko Cal. 5638 - 868

The Seiko 5638-868 represents an important milestone in Seiko's 1974 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-f6be7daf876f]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1974

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