Seiko Cal. 5666 - 581

The Seiko 5666-581 represents an important milestone in Seiko's 1989 lineup. With its 19mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-eab039485d57]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1989

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