Seiko Cal. 4566 - 643

The 4566-643 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4566 caliber with 21j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-1de4df4bb70f]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1967

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