Seiko Cal. 5691 - 609

This Spring Drive model from 1972 features a 40mm Stainless Steel case. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-3c379046fff0]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1972

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