Seiko Cal. 6668 - 992

The 6668-992 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6668 caliber with 18j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-63f7ef1222dc]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1970

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