Seiko Cal. 4478 - 948

This Spring Drive model from 1969 features a 43mm Two-Tone case. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-1bbd5529ac77]

Also known as: Monster, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1969

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