Seiko Cal. 6657 - 961

The Seiko 6657-961 represents an important milestone in Seiko's 1972 lineup. With its 22mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-478d7ff9e750]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1972

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