Seiko Cal. 5640 - 747

This Kinetic model from 1967 features a 40mm Stainless Steel case. With its 19mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-cd684d910425]

Also known as: Navigator

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1967

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