Seiko Cal. 4490 - 912

The Seiko 4490-912 represents an important milestone in Seiko's 1974 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-c93be4879ed0]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1974

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