Seiko Cal. 6231 - 934

This Automatic model from 1985 features a 36mm PVD Black case. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-93fe60da947f]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1985

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