Seiko Cal. 7139 - 936

The Seiko 7139-936 represents an important milestone in Seiko's 1991 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-4c643cb6fe5a]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1991

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