Seiko Cal. 5631 - 349

The Seiko 5631-349 represents an important milestone in Seiko's 1974 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-53f8d49275f9]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1974

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