Seiko Cal. 5639 - 317

The Seiko 5639-317 represents an important milestone in Seiko's 1982 lineup. It features a Black dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-84de036cfcaf]

Also known as: Helmet, Sea Horse

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1982

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