Seiko Cal. 6669 - 718

This Spring Drive model from 1989 features a 37mm Stainless Steel case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-4dfa1ebd350b]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1989

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