Seiko Cal. 5640 - 469

The Seiko 5640-469 represents an important milestone in Seiko's 1984 lineup. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-cd7ed87b93ed]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1984

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