Seiko Cal. 4590 - 742

This Spring Drive model from 1966 features a 37mm Stainless Steel case. With its 18mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-ebaaf655f134]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1966

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