Seiko Cal. 4437 - 521

This Spring Drive model from 1966 features a 36mm Titanium case. It features a Champagne dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-be4a2807b3df]

Also known as: Shogun, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1966

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