Seiko Cal. 5639 - 587

This Hand-Winding model from 1974 features a 38mm Titanium case. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-6df149bfc281]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1974

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