Seiko Cal. 5637 - 231

The Seiko 5637-231 represents an important milestone in Seiko's 1975 lineup. Powered by the 5637 caliber with 26j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-67557b60ace7]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1975

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