Seiko Cal. 5631 - 615

This Hand-Winding model from 1976 features a 44mm PVD Black case. With its 22mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-fc8fbc3b4623]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1976

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