Seiko Cal. 4443 - 638

This Spring Drive model from 1989 features a 41mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-834d9d56579c]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1989

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