Seiko Cal. 6291 - 691

This Hand-Winding model from 1981 features a 36mm Titanium case. With its 20mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-fda000facfd6]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1981

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