Seiko Cal. 4487 - 479

The Seiko 4487-479 represents an important milestone in Seiko's 1977 lineup. Powered by the 4487 caliber with 19j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-1ffcb9f52c21]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1977

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