Seiko Cal. 7139 - 761

Released in 1966, the Cal. 7139 with design code 761 was part of Seiko's domestic market collection. With its 20mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-15f3ee00df9a]

Also known as: Crown, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

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