Seiko Cal. 4581 - 744

The Seiko 4581-744 represents an important milestone in Seiko's 1981 lineup. With its 18mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-2326689afa47]

Also known as: Tuna, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1981

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