Seiko Cal. 5230 - 591

This Spring Drive model from 1971 features a 40mm Two-Tone case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-0685e943fa8b]

Also known as: Sea Horse, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1971

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