Seiko Cal. 7139 - 178

This Spring Drive model from 1977 features a 46mm PVD Black case. With its 22mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-1dca6d6c1fd0]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1977

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