Seiko Cal. 6378 - 102

This Spring Drive model from 1972 features a 46mm PVD Black case. With its 20mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-a5c00ea34134]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1972

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