Seiko Cal. 5660 - 350

The Seiko 5660-350 represents an important milestone in Seiko's 1977 lineup. With its 19mm lug width and 9.6mm profile, it sits comfortably on most wrists. [seikata-wm-4169cd2f89c0]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1977

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