Seiko Cal. 4490 - 497

The Seiko 4490-497 represents an important milestone in Seiko's 1982 lineup. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-4002ab898f47]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1982

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