Seiko Cal. 4581 - 200

This Spring Drive model from 1967 features a 37mm Stainless Steel case. With its 22mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-87be2a0897ef]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1967

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