Seiko Cal. 7131 - 920

This Hand-Winding model from 1982 features a 43mm Hardlex-Coated Steel case. With its 19mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-e03fecfc729a]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1982

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