Seiko Cal. 4599 - 631

This Spring Drive model from 1976 features a 37mm PVD Black case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b61e58bc764c]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1976

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