Seiko Cal. 4578 - 898

The Seiko 4578-898 represents an important milestone in Seiko's 1966 lineup. Powered by the 4578 caliber with 22j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-363d94164185]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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