Seiko Cal. 6131 - 530

This Hand-Winding model from 1967 features a 45mm Titanium case. With its 22mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-15b8cffd25e3]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1967

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