Seiko Cal. 6638 - 158

This Spring Drive model from 1969 features a 46mm Titanium case. Powered by the 6638 caliber with 31j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-6d536e0db954]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1969

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