Seiko Cal. 4437 - 683

The Seiko 4437-683 represents an important milestone in Seiko's 1990 lineup. It features a Silver dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-36afffebf822]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1990

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