Seiko Cal. 6631 - 617

This Spring Drive model from 1991 features a 46mm Stainless Steel case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-86f3313773c2]

Also known as: Pogue, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1991

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