Seiko Cal. 4526 - 940

This Spring Drive model from 1974 features a 37mm Hardlex-Coated Steel case. Powered by the 4526 caliber with 20j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-390c2eaad133]

Also known as: Samurai, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1974

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