Seiko Cal. 6660 - 923

The 6660-923 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6660 caliber with 33j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-3cb0d8b410cd]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1982

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