Seiko Cal. 6631 - 220

The Seiko 6631-220 represents an important milestone in Seiko's 1997 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-d3cddc1370fe]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1997

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