Seiko Cal. 7131 - 477

This Spring Drive model from 1980 features a 45mm Stainless Steel case. With its 21mm lug width and 14.4mm profile, it sits comfortably on most wrists. [seikata-wm-d92e325ddb9c]

Also known as: Monster, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1980

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