Seiko Cal. 6131 - 433

This Spring Drive model from 1990 features a 41mm Stainless Steel case. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-9ddd1aadf229]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1990

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