Seiko Cal. 4559 - 327

The Seiko 4559-327 represents an important milestone in Seiko's 1979 lineup. It features a Navy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-11fe3d9b97d4]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1979

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