Seiko Cal. 4437 - 728

This Quartz model from 1979 features a 44mm Hardlex-Coated Steel case. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-e626b4c186cf]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1979

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