Seiko Cal. 4446 - 439

This Spring Drive model from 1971 features a 43mm Hardlex-Coated Steel case. With its 21mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-25a8bb81a922]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1971

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