Seiko Cal. 6631 - 698

The Seiko 6631-698 represents an important milestone in Seiko's 1982 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-795e74cad3ca]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1982

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