Seiko Cal. 4490 - 487

The Seiko 4490-487 represents an important milestone in Seiko's 1978 lineup. With its 20mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-b42564e9dd18]

Also known as: Navigator, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1978

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