Seiko Cal. 4431 - 337

This Automatic model from 1973 features a 38mm Hardlex-Coated Steel case. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-b6ef0ca25449]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1973

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