Seiko Cal. 5638 - 933

The Seiko 5638-933 represents an important milestone in Seiko's 1979 lineup. Powered by the 5638 caliber with 22j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-b31a50faadf7]

Also known as: Bullhead, Rally

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1979

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