Seiko Cal. 4431 - 963

The Seiko 4431-963 represents an important milestone in Seiko's 1990 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-b1e8f4317a6c]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1990

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