Seiko Cal. 4442 - 321

The Seiko 4442-321 represents an important milestone in Seiko's 1970 lineup. Powered by the 4442 caliber with 29j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-caf7ec342c8f]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1970

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