Seiko Cal. 4593 - 387

This Spring Drive model from 1991 features a 46mm Two-Tone case. Powered by the 4593 caliber with 22j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-406b27f1afaa]

Also known as: Helmet, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1991

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