Seiko Cal. 4457 - 668

This Spring Drive model from 1967 features a 45mm Stainless Steel case. Powered by the 4457 caliber with 33j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-83e879e7e18e]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1967

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