Seiko Cal. 6634 - 981

This Spring Drive model from 1983 features a 44mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-c81598ddc03e]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1983

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