Seiko Cal. 4551 - 319

This Spring Drive model from 1965 features a 41mm Stainless Steel case. Powered by the 4551 caliber with 20j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-55f41d8cd04d]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1965

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