Seiko Cal. 6638 - 401

The Seiko 6638-401 represents an important milestone in Seiko's 1997 lineup. With its 22mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-1566a3d8f3c2]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1997

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