Seiko Cal. 5620 - 331

This Spring Drive model from 1974 features a 35mm Two-Tone case. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-a977e5e8754e]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1974

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