Seiko Cal. 5239 - 812

The Seiko 5239-812 represents an important milestone in Seiko's 1976 lineup. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-631b085ae131]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

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