Seiko Cal. 6631 - 300

The Seiko 6631-300 represents an important milestone in Seiko's 1983 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-f26b3986e2d2]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1983

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