Seiko Cal. 5666 - 665

The 5666-665 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5666 caliber with 34j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-9432dd1ec87d]

Also known as: Sea Horse, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1996

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