Seiko Cal. 5637 - 667

The Seiko 5637-667 represents an important milestone in Seiko's 1968 lineup. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-108e38fdfb98]

Also known as: Sea Horse, Arnie

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1968

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