Seiko Cal. 6660 - 866

The 6660-866 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6660 caliber with 18j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-ed9735ae1e8f]

Also known as: Turtle, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1992

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