Seiko Cal. 5690 - 940

This Spring Drive model from 1977 features a 40mm Stainless Steel case. Powered by the 5690 caliber with 20j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-b87bc9c0ec92]

Also known as: Samurai, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1977

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