Seiko Cal. 4581 - 318

This Spring Drive model from 1974 features a 37mm PVD Black case. With its 22mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-dc31845feb03]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1974

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