Seiko Cal. 7147 - 392

This Spring Drive model from 1976 features a 37mm Titanium case. Powered by the 7147 caliber with 34j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-7299a5d699fe]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1976

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