Seiko Cal. 7139 - 631

The Seiko 7139-631 represents an important milestone in Seiko's 1981 lineup. With its 22mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-234bf69d8d13]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1981

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