Seiko Cal. 4431 - 839

This Quartz model from 1968 features a 45mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-20cc044f8085]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1968

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