Seiko Cal. 5631 - 227

The Seiko 5631-227 represents an important milestone in Seiko's 1990 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-fb0e8c7b5c80]

Also known as: Sumo, Sea Horse

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1990

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