Seiko Cal. 5657 - 219

This Spring Drive model from 1974 features a 44mm Hardlex-Coated Steel case. Powered by the 5657 caliber with 20j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-d10687046466]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1974

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