Seiko Cal. 5639 - 830

This Spring Drive model from 1967 features a 37mm Hardlex-Coated Steel case. Powered by the 5639 caliber with 18j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-e892de4f9e22]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1967

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