Seiko Cal. 6678 - 139

This Spring Drive model from 1993 features a 41mm PVD Black case. With its 19mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-e357519909d6]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1993

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