Seiko Cal. 4427 - 844

This Hand-Winding model from 1974 features a 43mm Hardlex-Coated Steel case. Powered by the 4427 caliber with 35j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-4e8941af9a29]

Also known as: Sumo, Pogue

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1974

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