Seiko Cal. 4578 - 960

The Seiko 4578-960 represents an important milestone in Seiko's 1976 lineup. Powered by the 4578 caliber with 30j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-dd9e15d65bae]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1976

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