Seiko Cal. 6631 - 430

The Seiko 6631-430 represents an important milestone in Seiko's 1989 lineup. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-53aa3651c780]

Also known as: Shogun, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1989

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