Seiko Cal. 4437 - 423

The Seiko 4437-423 represents an important milestone in Seiko's 1990 lineup. With its 19mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-acb2bb91a07e]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1990

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