Seiko Cal. 4521 - 657

This Automatic model from 1990 features a 41mm Stainless Steel case. Powered by the 4521 caliber with 28j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-e5218c20c8a2]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1990

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