Seiko Cal. 4475 - 958

This Spring Drive model from 1977 features a 39mm PVD Black case. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-ac59f37e7596]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1977

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