Seiko Cal. 4427 - 609

This Spring Drive model from 1967 features a 37mm Gold-Plated case. With its 20mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-c4dfd14d63b3]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1967

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