Seiko Cal. 4437 - 389

The Seiko 4437-389 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-e12ec292323b]

Also known as: Monster, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1979

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