Seiko Cal. 5639 - 904

The Seiko 5639-904 represents an important milestone in Seiko's 1990 lineup. With its 22mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-5eceac24ab5b]

Also known as: Goldfeather, World Timer

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1990

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