Seiko Cal. 5639 - 764

The Seiko 5639-764 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-f47cdafa2dfb]

Also known as: Rally, Goldfeather

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1969

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