Seiko Cal. 6378 - 402

This Automatic model from 1990 features a 40mm PVD Black case. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-709735a317d8]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1990

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