Seiko Cal. 5634 - 538

This Spring Drive model from 1971 features a 35mm Two-Tone case. It features a Green dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-11fe897ef2ea]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1971

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