Seiko Cal. 6331 - 521

This Quartz model from 1974 features a 34mm PVD Black case. It features a Burgundy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-4fcb9447c8b1]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1974

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