Seiko Cal. 6378 - 739

The 6378-739 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-ab0ae41073d6]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1980

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