Seiko Cal. 6398 - 731

This Quartz model from 1976 features a 37mm Titanium case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-d5d8af6368df]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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