Seiko Cal. 0740 - 642

This Spring Drive model from 1967 features a 34mm Stainless Steel case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-43bc84894963]

Also known as: Sea Horse, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1967

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