Seiko Cal. 5691 - 991

This Hand-Winding model from 1991 features a 34mm Stainless Steel case. With its 19mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-e02ea0ff3d1d]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1991

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