Seiko Cal. 4421 - 187

The Seiko 4421-187 represents an important milestone in Seiko's 1966 lineup. Powered by the 4421 caliber with 32j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-b3e91a5c9d66]

Also known as: Shogun, Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

32j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1966

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