Seiko Cal. 4442 - 991

This Spring Drive model from 1986 features a 42mm PVD Black case. With its 18mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-f8468435d09b]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1986

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