Seiko Cal. 6661 - 583

This Spring Drive model from 1992 features a 40mm Titanium case. With its 21mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-379f60582edd]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1992

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