Seiko Cal. 6131 - 817

This Spring Drive model from 1979 features a 34mm PVD Black case. It features a Cream dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-a9cc9c1772b5]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1979

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