Seiko Cal. 5639 - 342

This Spring Drive model from 1976 features a 37mm PVD Black case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d3c9d5a2f3ec]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1976

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