Seiko Cal. 5642 - 660

This Spring Drive model from 1970 features a 37mm Gold-Plated case. It features a Cream dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-6df9ab3016a6]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1970

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