Seiko Cal. 4437 - 979

This Spring Drive model from 1983 features a 42mm Hardlex-Coated Steel case. With its 20mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-75cb47927a4d]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1983

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