Seiko Cal. 5631 - 182

The Seiko 5631-182 represents an important milestone in Seiko's 1965 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-2f95feafe1ba]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1965

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