Seiko Cal. 4581 - 637

This Hand-Winding model from 1991 features a 43mm PVD Black case. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-51a38d98bd43]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1991

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