Seiko Cal. 6684 - 522

This Spring Drive model from 1977 features a 43mm Gold-Plated case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-a24ee88ee7ef]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

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