Seiko Cal. 6645 - 938

This Spring Drive model from 1979 features a 42mm Gold-Plated case. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b7df4dd11e8f]

Also known as: Navigator, Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1979

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