Seiko Cal. 5639 - 641

The Seiko 5639-641 represents an important milestone in Seiko's 1978 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-4cd53f365b96]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1978

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