Seiko Cal. 5637 - 987

The Seiko 5637-987 represents an important milestone in Seiko's 1971 lineup. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-70cf8c5f3311]

Also known as: UFO, Goldfeather

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1971

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