Seiko Cal. 5633 - 312

This Spring Drive model from 1977 features a 38mm Gold-Plated case. It features a Cream dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-7fa7d637eed4]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1977

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