Seiko Cal. 5231 - 451

This Spring Drive model from 1968 features a 45mm Gold-Plated case. It features a Green dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-96ab7fda22a3]

Also known as: Bullhead, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1968

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