Seiko Cal. 7131 - 904

This Hand-Winding model from 1967 features a 38mm Titanium case. With its 21mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-ed53f5f841b3]

Also known as: Sumo, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1967

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