Seiko Cal. 6636 - 955

This Spring Drive model from 1974 features a 43mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-d96a8ead3577]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1974

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