Seiko Cal. 6331 - 690

This Spring Drive model from 1987 features a 46mm PVD Black case. It features a Black dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-c0825861b39e]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1987

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