Seiko Cal. 5631 - 595

This Automatic model from 1980 features a 40mm PVD Black case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-5b2ecac6bc06]

Also known as: Samurai, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1980

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