Seiko Cal. 6631 - 491

The Seiko 6631-491 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-e549a64cb33a]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1983

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