Seiko Cal. 5639 - 812

The Seiko 5639-812 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-40b83893d164]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1965

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