Seiko Cal. 5674 - 231

This Spring Drive model from 1971 features a 46mm Hardlex-Coated Steel case. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-6699640d9c75]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1971

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