Seiko Cal. 4564 - 990

The 4564-990 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4564 caliber with 36j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-9042c3eb9e2b]

Also known as: Sumo, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1970

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