Seiko Cal. 0764 - 559

This Hand-Winding model from 1978 features a 45mm Stainless Steel case. Powered by the 0764 caliber with 33j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-57c41a16efec]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1978

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