Seiko Cal. 4430 - 631

This Spring Drive model from 1967 features a 34mm Stainless Steel case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-9ac144f26ce4]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1967

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