Seiko Cal. 6660 - 554

This Spring Drive model from 1974 features a 41mm Gold-Plated case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-be5dc4856dad]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1974

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