Seiko Cal. 4538 - 559

The Seiko 4538-559 represents an important milestone in Seiko's 1967 lineup. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-1afc6fc59608]

Also known as: Tuna, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1967

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