Seiko Cal. 5639 - 830

This Hand-Winding model from 1981 features a 37mm PVD Black case. Powered by the 5639 caliber with 28j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-f8aeb90ff4c8]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1981

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