Seiko Cal. 6670 - 387

This Spring Drive model from 1966 features a 45mm PVD Black case. With its 19mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-057ce18a0376]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1966

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