Seiko Cal. 4442 - 139

The Seiko 4442-139 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-644a001121c8]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1981

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