Seiko Cal. 5660 - 936

The Seiko 5660-936 represents an important milestone in Seiko's 1977 lineup. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-5c6d0b6ac9dd]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1977

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