Seiko Cal. 4445 - 991

This Automatic model from 1970 features a 36mm PVD Black case. Powered by the 4445 caliber with 25j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-0ad96982ff77]

Also known as: Bullhead, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1970

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