Seiko Cal. 4447 - 442

This Spring Drive model from 1981 features a 37mm Titanium case. Powered by the 4447 caliber with 27j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-c85905dd9fe1]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1981

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