Seiko Cal. 4431 - 734

This Hand-Winding model from 1979 features a 40mm Gold-Plated case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-155971510578]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1979

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