Seiko Cal. 5634 - 641

The Seiko 5634-641 represents an important milestone in Seiko's 1982 lineup. With its 21mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-bd5a885e89fe]

Also known as: Pogue, Navigator

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1982

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