Seiko Cal. 4421 - 446

The Seiko 4421-446 represents an important milestone in Seiko's 1990 lineup. Powered by the 4421 caliber with 31j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-a5794980fc1e]

Also known as: Monster, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1990

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