Seiko Cal. 6660 - 766

Released in 1966, the Cal. 6660 with design code 766 was part of Seiko's domestic market collection. With its 18mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-0a00bde7cb04]

Also known as: UFO, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1966

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