Seiko Cal. 6691 - 568

This Hand-Winding model from 1965 features a 43mm Titanium case. With its 19mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-fb61566d5ed7]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1965

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