Seiko Cal. 4427 - 491

This Spring Drive model from 1991 features a 42mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-f9faf0431f1d]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1991

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