Seiko Cal. 6661 - 672

Released in 1970, the Cal. 6661 with design code 672 was part of Seiko's domestic market collection. With its 21mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-421fc0579af8]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1970

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