Seiko Cal. 6312 - 157

This Spring Drive model from 1968 features a 37mm Gold-Plated case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-c32841ed24cf]

Also known as: Bullhead, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1968

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