Seiko Cal. 6666 - 154

This Spring Drive model from 1967 features a 36mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-ba06b340466e]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1967

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