Seiko Cal. 6670 - 556

This Spring Drive model from 1966 features a 34mm Hardlex-Coated Steel case. With its 18mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-6503808aa026]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1966

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