Seiko Cal. 4559 - 340

The Seiko 4559-340 represents an important milestone in Seiko's 1971 lineup. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-155dbbe9ff3b]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1971

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