Seiko Cal. 7139 - 435

The Seiko 7139-435 represents an important milestone in Seiko's 1980 lineup. With its 22mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-f739d322eb72]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1980

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