Seiko Cal. 6639 - 596

The Seiko 6639-596 represents an important milestone in Seiko's 1972 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-8c3127b7efdd]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1972

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