Seiko Cal. 4487 - 679

The Seiko 4487-679 represents an important milestone in Seiko's 1999 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-cfd2fd2557e1]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1999

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