Seiko Cal. 4566 - 391

The 4566-391 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4566 caliber with 19j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-09f7ba714c93]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1976

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