Seiko Cal. 6393 - 578

This Spring Drive model from 1979 features a 45mm Titanium case. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-bab6eb26c767]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1979

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