Seiko Cal. 4556 - 987

This Hand-Winding model from 1971 features a 40mm PVD Black case. With its 22mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-e5c98621db7c]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1971

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