Seiko Cal. 6331 - 697

This Spring Drive model from 1974 features a 36mm Gold-Plated case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-8b414feb7aff]

Also known as: Crown, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

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