Seiko Cal. 6394 - 523

This Spring Drive model from 1979 features a 36mm PVD Black case. With its 18mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-1240a50d1559]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1979

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