Seiko Cal. 5639 - 517

The Seiko 5639-517 represents an important milestone in Seiko's 1975 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-94b3c35c8827]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1975

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