Seiko Cal. 4578 - 904

The Seiko 4578-904 represents an important milestone in Seiko's 1965 lineup. With its 22mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-e47587e9e8ef]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1965

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