Seiko Cal. 4439 - 740

Released in 1988, the Cal. 4439 with design code 740 was part of Seiko's domestic market collection. With its 18mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-38a1ee9dbbc1]

Also known as: Samurai, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1988

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