Seiko Cal. 5638 - 716

This Spring Drive model from 1965 features a 36mm Gold-Plated case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ec75eb574e77]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1965

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