Seiko Cal. 4537 - 590

This Spring Drive model from 1998 features a 43mm Stainless Steel case. With its 22mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-c0ded60ac881]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1998

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