Seiko Cal. 6378 - 280

The 6378-280 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-f5afe3a8674c]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1981

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