Seiko Cal. 5691 - 952

This Spring Drive model from 1973 features a 37mm Two-Tone case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-63b3cc177dcd]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

26j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1973

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