Seiko Cal. 5640 - 243

This Spring Drive model from 1970 features a 42mm Gold-Plated case. It features a Black dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-02d6f4e77492]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

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