Seiko Cal. 4439 - 518

The Seiko 4439-518 represents an important milestone in Seiko's 1990 lineup. Powered by the 4439 caliber with 25j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-962a9185a93b]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1990

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