Seiko Cal. 5666 - 770

The 5666-770 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-67fedc836086]

Also known as: Crown, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

23j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1979

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