Seiko Cal. 5666 - 589

The 5666-589 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5666 caliber with 31j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-6cf0f3a36ece]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1972

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