Seiko Cal. 6660 - 240

The Seiko 6660-240 represents an important milestone in Seiko's 1986 lineup. Powered by the 6660 caliber with 18j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-9dbf6a875c8a]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1986

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