Seiko Cal. 7139 - 556

The Seiko 7139-556 represents an important milestone in Seiko's 1974 lineup. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-385b1a4ea5fa]

Also known as: Pogue, Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1974

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