Seiko Cal. 6331 - 108

This Spring Drive model from 1972 features a 35mm PVD Black case. It features a Champagne dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-2e65254ac0fc]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1972

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