Seiko Cal. 7139 - 931

The Seiko 7139-931 represents an important milestone in Seiko's 1972 lineup. Powered by the 7139 caliber with 18j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-9fdce1fd4857]

Also known as: Pogue, Bellmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1972

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