Seiko Cal. 5231 - 580

This Spring Drive model from 1968 features a 45mm PVD Black case. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-5dcd6fa6df05]

Also known as: Rally, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1968

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