Seiko Cal. 6378 - 739

Seiko 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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