Seiko Cal. 4427 - 486

The Seiko 4427-486 represents an important milestone in Seiko's 1979 lineup. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-1c7d477e656b]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1979

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