Seiko Cal. 6131 - 347

This Spring Drive model from 1999 features a 39mm Stainless Steel case. With its 19mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-426e9cb74859]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1999

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