Seiko Cal. 6378 - 225

This Spring Drive model from 1989 features a 44mm PVD Black case. With its 18mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-16ce897d579f]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1989

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