Seiko Cal. 7139 - 654

The 7139-654 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-a7fc561b5091]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1977

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